Pipedia Dunhill Dating Guide

Dunhill Dating Guide

Based on Loring's and Field's guides (used by permission). Organized by Yang Forcióri

Note: This guide is in permanent improvement. If you have any information to add or questions, please do not hesitate to contact me here.

Does it have a patent number? See Below.

If it doesn't have a patent, then Click Here.

Patents Era

Among lovers of the Dunhill brand, the Patent Era pipes are the ones most sought after. Alfred began the Patent Era when he registered his first patent in 1904. It was for the Windshield Pipe, at the time still under Dunhill Motorities. In 1906 he opened his patent office to manage his inventions. In was in 1907 that he opened his first tobacco shop in London at Duke Street-N.31A, which starts the rich history of the legendary Dunhill pipe.

Since the first Dunhill patent stamped on a pipe was in 1905 (the year the patent was granted), we can say that Dunhill's Patent Era begins in 1905 and lasts until 1954.

Which one?

Single Patent

Click on the patent number to continue.

App25261 — 5861/12 — 1130806/15 — 158709/14 — 116989/17 — PATENTED 1914 — PATENTED MARCH.9.15 — 158709/14 — PAT.AMERICA 1915 — 1130806/15 — 116989/17 — BREV. No. 491232/18 — CANADIAN PATENT No. 197365/20 — 363582 — U.S. PATENT 1343253/20 — PAT No. 158709/14 — PATENTED 1932 — 10225/31 — 358812 — U.S. PATENT 1861910/32 — PATENT PENDING — 417574 — 417574/34 — PAT. No. 119708/17 — 1341418/20 — Pat. No. 209845/21 — BREV. No. EN. SUSPENS — PATENT No. 356090 PATENT No. 197365.

Double Patent - Shell Finish

In 1918, Dunhill began to unify two technologies into a single pipe — one patent for oil treatment and another for its inner tubes (it is the combination of the above-related patents).

Click on the patent number to continue.

5861/12.119708/17 — 119708/17.116989/17 — 119708/17.BREV.No. 491232/18 — PAT.MAR.9.15 over PAT.APP FOR — PAT.APP FOR over PAT.1914 — PAT.MAR.9.15 & 1341418/20 — PAT. Nos. 119708/17.116989/17 — 119708/17.BREV.No. 491232/18 — PAT. Nos. 158709/14&209845/21 — PAT. Nos. 1130806/15&1341418/20. — PAT. Nos. 209845/21&197365/20 — PAT. Nos. 1341418/20&1343253/20 — PAT. Nos. 158709/14&209845/21 — CANADIAN PATENTS 209845/21&PAT.PENDING. — U.S.PATENTS 1341418/20&1861910/32 — U.S.PATENTS 1341418/20&PAT.PENDING.

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App 25261

[1904/05 up to early-20s*] The first wind-shield pipes were patented in 1904 and sold from 1904/05 on, while Alfred Dunhill operated his “Dunhill's Motorities business. The Duke Street tobacconist did not yet exist, it opened in 1907. As such, those early pipes were stamped on the shank with DUNHILL’s over PATENT (patent number App 25261).

*The windshield was marketed for many years and was still available in the 1928 About Smoke catalog. However, this patent must have been used until the early 20s (before the date code), as some of the pipes sold in the United States in the early 1920s had only the inner tube patent.

5861/12

[1913 up to 1926] The first patent for Dunhill's aluminum Inner Tubes registered in England.
They were patented in March 1912, but they were being fitted about eighteen months earlier.

The date code is just after the patent number (sometimes after ENGLAND): 1920 +: 2, 3, 4, 5 or 6 (they are smaller and underscored).

In 1921 Dunhill formally instituted a one-year pipe guarantee (the "White Spot Guarantee") and in conjunction with that guarantee a date code system to date the pipes (see notes 6).

If it doesn't have the date code, it may be from before 1921. Check it out here.

Sometimes the patent was stamped without any date code after 1921. See if there are any additional details that can help you figure out an approximate date here.

PATENTED MARCH.9.15

[1915 up to 1923] The patent for Dunhill's aluminum Inner Tubes registered in the United States.

The date code is just after the patent number (sometimes after ENGLAND): 1920 +: 2 or 3 (they are smaller and underscored).

Sometimes applied as PAT.AMERICA 1915.

Dunhill formally instituted a one-year pipe guarantee (the "White Spot Guarantee") and in conjunction with that guarantee a date code system to date the pipes in 1921 (see notes 6).

If it doesn't have the date code, it may be from before 1921. Check it out here.

Sometimes the patent was stamped without any date code after 1921. See if there are any additional details that can help you figure out an approximate date here.

PATENTED 1914

[1914 up to 1923] The patent for Dunhill's aluminum Inner Tubes registered in Canada.

The date code is just after the patent number (sometimes after ENGLAND): 1920 +: 2 or 3 (they are smaller and underscored).

Dunhill formally instituted a one-year pipe guarantee (the "White Spot Guarantee") and in conjunction with that guarantee a date code system to date the pipes in 1921 (see notes 6).

If it doesn't have the date code, it may be from before 1921. Check it out here.

Sometimes the patent was stamped without any date code after 1921. See if there are any additional details that can help you figure out an approximate date here.

1130806/15

[1924 up to 1926] The patent for Dunhill's aluminum Inner Tubes registered in the United States.

The date code is just after the patent number (sometimes after ENGLAND): 1920 +: 4, 5 and 6 (they are smaller and underscored).

The Dunhill stamp inventory log also shows receipt of patent stamps without any date code in this period but it might have been added by the point-of-sales. If it doesn't have the date code, see if there are any additional details that can help you figure out an approximate date here.

158709/14

[1924 up to 1926] The patent for Dunhill's aluminum Inner Tubes registered in Canada.

The date code is just after the patent number (sometimes after ENGLAND): 1920 +: 4, 5 or 6 (they are smaller and underscored).

The Dunhill stamp inventory log also shows receipt of patent stamps without any date code in this period but it might have been added by the point-of-sales. If it doesn't have the date code, see if there are any additional details that can help you figure out an approximate date here.

116989/17

[1918 up to 1934] The patent for Dunhill's aluminum Inner Tubes with flange registered in England.

The date code is just after the patent number (sometimes after ENGLAND): 1920 +: 2, 3, 4, 5, 6, 7, 8, 9 and, 0 for 1930, then 11, 12, 13 and, 14 for the early-30s. (they are smaller and underscored).

Through 1926/1927 pipes intended for the domestic (i.e. English) market generally were not stamped "MADE IN ENGLAND" unless the pipe did not have an Inner Tube.

In 1934 this patent was used with DUNHILL'S "SHELL" (without "Briar") stamp on pipes intended for export.

Dunhill formally instituted a one-year pipe guarantee (the "White Spot Guarantee") and in conjunction with that guarantee a date code system to date the pipes in 1921 (see notes 6).

If it doesn't have the date code, it may be from before 1921. Check it out here.

Sometimes the patent was stamped without any date code after 1921. See if there are any additional details that can help you figure out an approximate date here.

PAT. No. 119708/17

[1918 up to 1929] The patent for Dunhill's Oil Treatment/Sandblasting, registered in England.

The date code is just after the patent number (sometimes after ENGLAND): 1920 +: 2, 3, 4, 5, 6, 7, 8 and 9 (they are smaller and underscored).

Dunhill formally instituted a one-year pipe guarantee (the "White Spot Guarantee") and in conjunction with that guarantee a date code system to date the pipes in 1921 (see notes 6).

"SHELL BRIAR" did not have the "MADE IN ENGLAND" (see notes 7).

The PAT. No. 119708/17 was used in conjunction with "FABRICATION ANGLAISE" between 1927 and 1929 on pipes destined for France.

If it doesn't have the date code, it may be from before 1921.

Sometimes the patent was stamped without any date code after 1921. See if there are any additional details that can help you figure out an approximate date here.

1341418/20

[1921 up to 1927 then 1927 up to 1929 & WWII Period] The patent for Dunhill's Oil Treatment/Sandblasting, registered in United States.

The date code is just after the patent number (sometimes after ENGLAND): 1920 +: 2, 3, 4, 5, 6, 7, 8 and 9 (they are smaller and underscored).

From '27 up to '29 the patent number was preceded by "U.S.PATENT".

Loring defends a hypothesis that this patent was also applied in the WWII period without date code or any other nomenclature, like the inner tube, for example. See more about it here.

Sometimes the patent was stamped without any date code. See if there are any additional details that can help you figure out an approximate date here.

Pat. No. 209845/21

[1924 up to 1927 then, 1928 up to 1929, and 1936 up to 1941] The patent for Dunhill's Oil Treatment/Sandblasting, registered in Canada.

The date code is just after the patent number (sometimes after ENGLAND): 1920 +: 4, 5, 6, 7, 8 and 9 (they are smaller and underscored).

From '28 up to '29 the patent number was preceded by "CANADIAN PATENT" and stamped DUNHILL'S "SHELL" (without "Briar").

From '36 up to '41 the patent number was preceded by "CANADIAN PATENT" and in this case, stamped DUNHILL SHELL (without quotation marks and the possessive).

Sometimes the patent was stamped without any date code. See if there are any additional details that can help you figure out an approximate date here.

CANADIAN PATENT No. 197365/20

[1927 & 1928 up to 1934] The patent for Dunhill's aluminum Inner Tubes with flange registered in Canada.

The date code is just after the patent number (sometimes after ENGLAND): 1920 +: 8, 9 and, 0 for 1930, then 11, 12, 13 and, 14 for the early-30s. (they are smaller and underscored).

In 1927, this patent was applied without the "CANADIAN" before the patent number, i.e, only "PATENT. No. 197365/20"

Sometimes the patent was stamped without any date code. See if there are any additional details that can help you figure out an approximate date here.

10225/31

[April 1931 up to December 1931] The provisional patent protection (Prov. Prot.) for Dunhill's Vernon fitment, registered in England on 7 April '31 and applied right after. Granted with final Nº: 363582 on 24 December 1931.

The Dunhill stamp inventory log also shows receipt of patent stamps without any date code in this period. See if there are any additional details that can help you figure out an approximate date here.

363582

[1931 up to 1936] The patent for Dunhill's Vernon fitment (sometimes attached to the shank), registered in England.

The date code is just after the patent number (sometimes after ENGLAND): 1930 +: 11, 12, 13, 14, 15 and 16 (they are smaller and underscored).

Sometimes the patent was stamped without any date code. See if there are any additional details that can help you figure out an approximate date here.

358812

[1932 up to 1935] Patent related to Dunhill's Vernon fitment (sometimes attached to the shank), also registered in England. It was not possible to establish the difference between it and the patent 363582.

The date code is just after the patent number (sometimes after ENGLAND): 1930 +: 12, 13, 14 and 15 (they are smaller and underscored).

Sometimes the patent was stamped without any date code. See if there are any additional details that can help you figure out an approximate date here.

PATENT No. 356090

[1936] The patent for Dunhill's Vernon fitment (sometimes attached to the shank), registered in Canada.

The date code is just after the patent number (sometimes after ENGLAND): 1930 +: 16 (it is smaller and underscored).

Sometimes the patent was stamped without any date code. See if there are any additional details that can help you figure out an approximate date here.

U.S. PATENT 1861910/32

[1932 than 1935 up to 1936] The patent for Dunhill's Vernon fitment (sometimes attached to the shank), registered in United States.

The date code is just after the patent number (sometimes after ENGLAND): 1930 +: 12, 13, 14, 15 and 16 (they are smaller and underscored).

The reason for this jump (and whether there was) from 1932 to 1935 is unclear.

Sometimes the patent was stamped without any date code. See if there are any additional details that can help you figure out an approximate date here.

U.S. PATENT 1343253/20

[1927 up to 1933 & 1927 up to 1941] The patent for Dunhill's aluminum Inner Tubes with flange registered in the United States.

The date code is just after the patent number (sometimes after ENGLAND): 1920 +: 7, 8, 9 and, 0 for 1930, then 11, 12 and 13. (they are smaller and underscored).

Sometimes without the "U.S. PATENT", i.e, only the patent number 1343253/20 was stamped. Used between 1927 up to 1941.

From '37 up to '41, the Dunhill stamp inventory log also shows receipt of patent stamps without any date code in this period but it might have been added by the point-of-sales. If it does, it is something like 1930 +: 7, 8, 9, 7, 8, 9 and, 0 for 1940, then 1 for 1941. If it doesn't have the date code, see if there are any additional details that can help you figure out an approximate date here.

417574

[1935 up to 1941] The patent for Dunhill's aluminum Inner Tubes with spring flange registered in England.

The date code is just after the patent number (sometimes after ENGLAND): 1930 +: 5, 6, 7, 8, 9, 7, 8, 9 and, 0 for 1940, then 1 for 1941. (they are smaller and underscored).

From this time onward, the possessive (Dunhill's) and the quotation marks for Shell finish is no longer applies.

without quotation marks and the possessive

Sometimes the patent was stamped without any date code. See if there are any additional details that can help you figure out an approximate date here.

PATENT PENDING

[1932 up to 1935] The patent for Dunhill's aluminum Inner Tubes (probably), and the country where it was registered is currently unknown.

The date code is just after the patent number (sometimes after ENGLAND): 1930 +: 12, 13, 14 and 15 and (they are smaller and underscored).

Sometimes the patent was stamped without any date code. See if there are any additional details that can help you figure out an approximate date here.

PATENTED 1932

[1934 up to 1935] The patent for Dunhill's aluminum Inner Tubes (probably), and the country where it was registered is currently unknown.

The date code is just after the patent number (sometimes after ENGLAND): 1930 +: 14 and 15 and (they are smaller and underscored).

Sometimes the patent was stamped without any date code. See if there are any additional details that can help you figure out an approximate date here.

PATENT No. 197365

[1937 up to 1941] The patent for Dunhill's aluminum Inner Tubes with flange registered in Canada.

The date code is just after the patent number (sometimes after ENGLAND): 1930 +: 7, 8, 9, 7, 8, 9 and, 0 for 1940, then 1 for 1941. (they are smaller and underscored).

Sometimes the patent was stamped without any date code. See if there are any additional details that can help you figure out an approximate date here.

417574/34

[1942 up to 1954] The patent for Dunhill's aluminum Inner Tubes with spring flange registered in England.

The date code is just after the patent number (sometimes after ENGLAND): 1940 +: 5, 6, 7, 8, 9, 7, 8, 9 than, 0, 1, 2, 3 and 4, for the 50s. (they are smaller and underscored).

From 1944 through 1954 only the English inner tube with spring flange patent no. 417574/34, was stamped.

From this time onward, only this patent was used, for all pipes with Inner Tube without regard to the destination country.

It might be noted that in 1944 there was a tooling error and in that year both a forward and backward slash stampings may be found, i.e. /34 and \34.

The encircled group number was introduced in 1951 (see notes 1).

In 1952 full-size stamps were added to the finishes, right after the circled groups (see notes 2).

In 1953 the finishes stamps after the circled group were reduced to about half the size (see notes 3).

Sometimes the patent was stamped without any date code. See if there are any additional details that can help you figure out an approximate date here.

BREV. No. 491232/18

[1919 up to 1934] The patent for Dunhill's aluminum Inner Tubes with flange registered in France.

The date code is just after the patent number (sometimes after FABRICATION ANGLAISE): 1920 +: 2, 3, 4, 5, 6, 7, 8, 9 and, 0 for 1930, then 11, 12, 13 and, 14 for the early-30s. (they are smaller and underscored).

"FABRICATION ANGLAISE" stamped on pipes destined for France.

The BREV. No. 491232/18 was also used (alone) on Dunhill's Shell finish in 1934.

If it doesn't have the date code, it may be from before 1921. Check it out here.

Sometimes the patent was stamped without any date code after 1921. See if there are any additional details that can help you figure out an approximate date here.

BREV. No. EN. SUSPENS

[1935] The patent for Dunhill's aluminum Inner Tubes with flange registered in France.

"FABRICATION ANGLAISE" stamped on pipes destined for France.

The Dunhill stamp inventory log also shows receipt of patent stamps without any date code in this year.

Double Patent Area

PAT. Nos. 5861/12.119708/17

[1918 up to 1926] Patents for Dunhill's Oil Treatment/Sandblasting and Inner Tubes, registered in England.

The date code is just after the patent number: 1920 +: 2, 3, 4, 5 and 6 (they are smaller and underscored).

Dunhill formally instituted a one-year pipe guarantee and in conjunction with that guarantee a date code system to date the pipes in 1921 (see notes 6).

Possessive stamp: DUNHILL'S "SHELL BRIAR" did not have the "Made in England" (see notes 7).

Sometimes stamped 119708/17.5861/12 instead 5861/12.119708/17.

"MADE IN ENGLAND" stamped on pipes intended for export, in these cases, stamped DUNHILL'S "SHELL" (without "Briar").

If it doesn't have the date code, it may be from before 1921. Check it out here.

Sometimes the patent was stamped without any date code after 1921. See if there are any additional details that can help you figure out an approximate date here.

PAT.APP FOR over PAT.MAR.9.15

[1918 up to 1920] Patents for Dunhill's Oil Treatment/Sandblasting (US/CA) and Inner Tubes registered in the United States.

No date code in this period. Dunhill formally instituted a one-year pipe guarantee (the "White Spot Guarantee") and in conjunction with that guarantee a date code system to date the pipes in 1921 (see notes 6).

"MADE IN ENGLAND" stamped on pipes intended for export, in these cases, stamped DUNHILL'S "SHELL" (without "BRIAR").

No date code or other signal that may determine a specific year during this period.

PAT.APP FOR over PAT.1914

[1919 up to 1921] Patents for Dunhill's Oil Treatment/Sandblasting (US/CA) and Inner Tubes registered in the Canada.

Dunhill formally instituted a one-year pipe guarantee (the "White Spot Guarantee") and in conjunction with that guarantee a date code system to date the pipes in 1921 (see notes 6).

"MADE IN ENGLAND" stamped on pipes intended for export, in these cases, stamped DUNHILL'S "SHELL" (without "BRIAR").

No date code or other signal that may determine a specific year during this period.

PAT.MAR.9.15 & 1341418/20

[1920 up to 1923] The patents for Dunhill's aluminum Inner Tubes and Oil Treatment/Sandblasting, registered in United States.

The date code is just after the patent number (sometimes after ENGLAND): 1920 +: 2 and 3 (they are smaller and underscored).

Dunhill formally instituted a one-year pipe guarantee (the "White Spot Guarantee") and in conjunction with that guarantee a date code system to date the pipes in 1921 (see notes 6).

"MADE IN ENGLAND" stamped on pipes intended for export, in these cases, stamped DUNHILL'S "SHELL" (without "BRIAR").

Sometimes the patent was stamped without any date code after 1921. See if there are any additional details that can help you figure out an approximate date here.

PAT. Nos. 119708/17.116989/17

[1927 up to 1931 / 1934] Patents for Dunhill's Oil Treatment/Sandblasting and Inner Tubes with flange, registered in England.

The date code is just after the patent number: 1920 +: 7, 8, 9 and, 0 for 1930 and 11 for 1931 (they are smaller and underscored).

Sometimes stamped 116989/17&119708/17 instead 119708117.116989/17 and using "&".

Possessive stamp: DUNHILL'S "SHELL BRIAR" did not have the "Made in England" (see notes 7).

"MADE IN ENGLAND" stamped on pipes intended for export, in these cases, stamped DUNHILL'S "SHELL" (without "Briar"), and using this patent up to '34 (in this situation add these codes to the list above: 12, 13 and 14 for 30s).

Sometimes the patent was stamped without any date code after 1921. See if there are any additional details that can help you figure out an approximate date here.

119708/17.BREV.No. 491232/18

[1927 up to 1933] Patents for Dunhill's Oil Treatment/Sandblasting and Inner Tubes with flange, registered in England and France..

The date code is just after the patent number (sometimes after FABRICATION ANGLAISE): 1920 +: 7, 8, 9 and, 0 for 1930, 11, 12 and 13 for the 30s. (they are smaller and underscored).

"FABRICATION ANGLAISE" stamped on pipes destined for France.

Possessive stamp: DUNHILL'S "SHELL"

Sometimes the patent was stamped without any date code after 1921. See if there are any additional details that can help you figure out an approximate date here.

PAT. Nos. 158709/14&209845/21

[1924 up to 1926] Patents for Dunhill's Oil Treatment/Sandblasting and Inner Tubes, registered in Canada.

The date code is just after the patent number (sometimes after ENGLAND): 1920 +: 4, 5 and 6 (they are smaller and underscored).

"MADE IN ENGLAND" stamped on pipes intended for export, in these cases, stamped DUNHILL'S "SHELL" (without "BRIAR").

Sometimes the patent was stamped without any date code. See if there are any additional details that can help you figure out an approximate date here.

PAT. Nos. 1130806/15&1341418/20

[1924 up to 1929] Patents for Dunhill's Oil Treatment/Sandblasting and Inner Tubes, registered in United States.

The date code is just after the patent number (sometimes after ENGLAND): 1920 +: 4, 5, 6, 7, 8 and 9 (they are smaller and underscored).

"MADE IN ENGLAND" stamped on pipes intended for export, in these cases, stamped DUNHILL'S "SHELL" (without "Briar").

Sometimes the patent was stamped without any date code. See if there are any additional details that can help you figure out an approximate date here.

PAT. Nos. 209845/21&197365/20

[1927 then 1928 up to 1934] Patents for Dunhill's Oil Treatment/Sandblasting and Inner Tubes with flange, registered in Canada.

The date code is just after the patent number (sometimes after ENGLAND): 1920 +: 7, 8, 9 and, 0 for 1930, 11, 12, 13 and 14 for the 30s. (they are smaller and underscored).

From '28 up to '34 the patent numbers stamp was preceded by "CANADIAN PATENTS". Only in 1927 were stamped the numbers alone.

"MADE IN ENGLAND" stamped on pipes intended for export, in these cases, stamped DUNHILL'S "SHELL" (without "Briar").

Sometimes the patent was stamped without any date code. See if there are any additional details that can help you figure out an approximate date here.

PAT. Nos. 1341418/20&1343253/20

[1927 then 1927 up to 1933] Patents for Dunhill's Oil Treatment/Sandblasting and Inner Tubes with flange, registered in United States.

The date code is just after the patent number (sometimes after ENGLAND): 1920 +: 7, 8, 9 and, 0 for 1930, 11, 12 and 13 for the 30s. (they are smaller and underscored).

From '27 up to '33 the patent numbers stamp was preceded by "U.S.PATENTS".

"MADE IN ENGLAND" stamped on pipes intended for export, in these cases, stamped DUNHILL'S "SHELL" (without "Briar").

Sometimes the patent was stamped without any date code. See if there are any additional details that can help you figure out an approximate date here.

CANADIAN PATENTS 209845/21&PAT.PENDING

[1933 then 1935] Patents for Dunhill's Oil Treatment/Sandblasting and Inner Tubes with flange, registered in Canada.

The date code is just after the patent number (sometimes after ENGLAND): 1930 +: 13 then 15 (they are smaller and underscored).

"MADE IN ENGLAND" stamped on pipes intended for export, in these cases, stamped DUNHILL'S "SHELL" (without "Briar").

In 1935 we have a variation to CANADIAN PATENTS 209845/21&PENDING (without the "PAT"). In this case, stamped DUNHILL SHELL (without quotation marks and the possessive).

Sometimes the patent was stamped without any date code. See if there are any additional details that can help you figure out an approximate date here.

U.S.PATENTS 1341418/20&1861910/32

[1932 up to 1936] Patents for Dunhill's Oil Treatment/Sandblasting and Dunhill's Vernon fitment, registered in United States.

The date code is just after the patent number (sometimes after ENGLAND): 1930 +: 12, 13, 14 and 15 (see notes 8) (it is smaller and underscored).

In early 1932 was stamped "U.S.PATENTS 1341418/20&PAT.PENDING" before the patent for Vernon fitment is granted (which occurred in the same year).

"MADE IN ENGLAND" stamped on pipes intended for export, in these cases, stamped DUNHILL'S "SHELL" (without "Briar").

Sometimes the patent was stamped without any date code. See if there are any additional details that can help you figure out an approximate date here.

Pre-Date-System

1) This period is divided into three parts: Pre-October 1918, Post-October 1918, and early-20s for a smooth finish.

2) For sandblasting finish, the "Shell Briar", we have one period with patent exchanges according to the country that was directed.

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Pre-October 1918

From 1910 through October 1918 Dunhill branded its pipes with DUNHILL over DUKE ST. S.W. (After this period, only in special editions, as the anniversary versions 75 years in 1985 and 100 years in 2007), which reproduce Dunhill pipes made in 1910.

*1912 - The "White Spot" trademark first appeared on pipes.

From June 1918 through October 1918 a small round subscript 'stop', like this "o" was added immediately following the "A", that generally was stamped to the left of DUNHILL (Before that, they were aleatory and sometimes more than once).

In November of 1918, Dunhill changed the DUKE ST S. W. stamping to LONDON.

"MADE IN ENGLAND" was (probably) stamped on the Duke Street pipes intended for export to the United States (only).

Post-October 1918

Jan up to mid-May of 1919, DUNHILL arched over LONDON lines are of equal length, the verticals of the "D" of DUNHILL and the "L" of LONDON lining up.

Post-end-May of 1919, the stamp was recut at the end of May and from June until the end of 1919. LONDON is equal to the arch with the "L" and "N" pointing to the outside points of the "D" and final "L" of Dunhill.

Early-20s

1920 up to 1922, the Dunhill stamp returns to normal (without arching) and Dunhill's "D" (from November) has tails.

In 1921, the date system code was introduced.

Triggers

The "F/T" (fishtail) mouthpiece was designed only in the 1930s.

The original SKUs/model numbers from the 1920s until the early 1970s stood for very specific shapes and bowls. For example, the codes 31, 34, 59, 111, 113, 117, 196, LB, LBS... Were all different types of Billiard shaped pipes and there were about 50, such codes for the Billiard shape alone.

Dunhill’s application for what became the Registration Number bit stampings to 1916 up to circa 1933, “REG. No. [over the mouthpiece] 654638”, some are stamped “PROV. PRO 2983/16”.

The White Spot has changed over the decades, as we can see in the image on the right.

The original Inner Tube usually has the patent number stamped on the surface.

The possessive (Dunhill's) for Shell finish was applied from 1918 up to 1934.

In 1952, the stamps changed from DUNHILL over LONDON to DUNHILL over the name of the finish, BRUYERE, ROOT BRIAR etc (see notes 4).

The stamp "FABRICATION ANGLAISE" was applied on pipes destined for France through '17 up to 40s. The stamp being retired with the war.

Shell Briar (not only Shell) stamp was used again from 1952 up to 1954. This time, without quotation marks and the possessive "Dunhill's".

"SHELL" was stamped between quotation marks until 1934.

Post-Patents

If your logo is the same or similar to that one, click here.

If your logo is the same as that, click here.

If your logo is the same as that, click here.

1955 up to 1994

1995 up to 2012

March 2012 up to nowadays

Notes

|1 John Loring indicated that the Shells will be found with a 1950 date code and a circled group size stamp, but those pipes were either manufactured and stamped in 1951, or manufactured in 1950 and, still unsold, received a supplementary group size stamp in 1951.

|2 Finishing letters and group size: "S" for Shell, "T" for Tanshell, "R/B" for Redbark, "A" for Bruyère, and "R" for Root Briar. For example (4)S, (3)T, and so forth.

|3 Loring indicated that the finished stamps were reduced to about half size in 1954. However, Mr. Hener (Product Line Director - The White Spot Smoker's Accessory Division) points out that this change occurred in 1953.

|4 Loring indicated that the logo over the finished stamp changed before that period exclusively for the shell finish, and only in 1947.

|5 The stamp "Pat. App For" was used in conjunction with the American and Canadian patent for inner tubes. We can assume that the "Pat App For" is related to blasting. Nevertheless, we cannot define the origin of the patent since it was used in both cases. This mix of patents occurred in other cases, such as the merger of English and French patents.

|6 Although introduced in 1921, it seems to have been applied vigorously from 1922. Date code on 1921 pipes is currently unknown.

|7 This stamp "Shell Briar" was also used in export-type pipes (MADE IN ENGLAND) from 1952 up to 1954.

|8 Loring pointed out that this double patent was used until 1934 but we found a pipe that indicates that it was used up to 35[1].

Contact information

Yang Forcióri
Brasília, Distrito Federal - Brazil
E-mail: mailto:yang@forciori.com.br

Yang (talk) 14:41, 28 June 2020 (CDT)