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* 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|notes 6]]). | * 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|notes 6]]). | ||
* "MADE IN ENGLAND" stamped on pipes intended for export, in these cases, stamped '''DUNHILL'S "SHELL"''' (without "BRIAR". See [[#Notes|notes 7 | * "MADE IN ENGLAND" stamped on pipes intended for export, in these cases, stamped '''DUNHILL'S "SHELL"''' (without "BRIAR". See [[#Notes|notes 7]]). | ||
No date code or other signal that may determine a specific year during this period. | No date code or other signal that may determine a specific year during this period. |