Pipedia Dunhill Dating Guide: Difference between revisions
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<span style="color:#800000">['''1924 up to 1926''']</span> The patent for Dunhill's aluminum [https://pipedia.org/images/d/d1/PA3104-900x900.jpg Inner Tubes] registered in '''Canada'''.<br> | <span style="color:#800000">['''1924 up to 1926''']</span> The patent for Dunhill's aluminum [https://pipedia.org/images/d/d1/PA3104-900x900.jpg Inner Tubes] registered in '''Canada'''.<br> | ||
Revision as of 14:24, 23 June 2020
Dunhill Dating Guide
Note: This guide is in permanent improvement. If you have any info 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 the brand lovers, those of the Patents Era are the most prestigious. Alfred began the Patents Era when he registered his first patent in 1904. It was the Windshield Pipe, at the time still as Dunhill Motorities. In 1906 he opened his patent office to manage his inventions. Only in 1907, he opened his first tobacco shop in London at Duke Street-N.31A, and then it became history.
Since the first Dunhill patent stamped on a pipe was in 1905 (the year the patent was granted), we can say that Dunhill's Patents Era begins in 1905 and ends in 1954, with an inner tube patent.
Which one?
- 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 — 1861910/32 — BREV. No. EN. SUSPENS — PATENT No. 356090 — PATENT No. 197365.
App 25261
[1904/05 up to early-20s*] The first wind-shield pipes were patented in 1904 and sold from 1904/05 onwards, while Alfred Dunhill operated his “Dunhill's Motorities business. The Duke Street tobacconist store did not exist yet, it only opened in 1907. Therefore, 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 1928 About Smoke catalog. However, this patent must have been used until the early 20s (before the date code), as some pipes were 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 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).
- 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.
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.
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.
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.
- 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.
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.
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.
1341418/20
[1921 up to 1927] 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 and 7 (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.
Pat. No. 209845/21
[1924 up to 1927] 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 and 7 (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.
CANADIAN PATENT No. 197365/20
[1927 & 1928 up to 1934] The patent for Dunhill's aluminum Inner Tubes 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.
U.S. PATENT 1861910/32
[1932 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).
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) for Shell finish is no longer applies.
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 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).
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.
The Dunhill stamp inventory log also shows receipt of patent stamps without any date code in this year.
Pre-Date-System
This period is divided into three parts: Pre-October 1918, Post-October 1918, and early-20s.
| 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.
| 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.
- In 1952, the stamps changed from DUNHILL over LONDON to DUNHILL over the name of the finish, SHELL, BRUYERE etc (see notes 4).
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 finish stamp changed before that period exclusively for the shell finish, and only in 1947.
Contact information
Yang Forcióri Brasília, Distrito Federal - Brazil E-mail: mailto:yang@forciori.com.br