1932–1940 Dunhill Double Patent No. 1,341,418 / 20 No. 1,961,910 / 32 misprint For Sale

年关于烟斗结构 / 年（仅在战前使用） This wrong edition stamp actually makes your pipe more collectible, belonging to a rare historical sample of "wrong edition".This is a typical pre war/World War II Dunhill Shell sandblasted pipe, belonging to the collection level old bucket dual patent number (1341418/20+1961910/32), with a usage time of 1932-1940The stamp on your pipe is indeed 1861910/32, which is a very special printing/mold error version in the Dunhill Old Dou. We can understand it as follows:1. Core FactsThe standard second patent number should be 1961910 (approved in 1932), which is the true number of the United States Patent Office.The 1861910/32 you see is a numerical misalignment/omission during early mold or stamping:Wrote 1961910 as 1861910This is a rare misprint stamp known from the Dunhill Old Dou, not a fake or post engraved one.
This pipe belongs to the Patent Era, and the specific information is as follows:Interpretation of Core IdentificationStamp: DUNHILL'S SHELL MADE IN ENGLAND+U.S. PATENTS US Sandblasting Process Patent Approved1961910/32: Another US patent approved in 1932LV: This is the early bucket code of Dunhill (representing Long Vanderbilt/Brandy type), not the year codeRange of production yearsThe dual patent numbers (1341418/20+161910/32) were used from 1932 to 1940If it were during World War II (1941-1945), only patent number 1341418/20 might have been retainedAfter 1955, Dunhill stopped labeling patent numbers on pipes, so the production time of this pipe must have been between 1932 and 1954Combining the spelling format of DUNHILL'S SHELL, the more precise range is 1932-1940Key FindingsMost likely production year: 1932-1940 (dual patent period)If it is a single patent version, it may be a wartime product from 1941 to 1945This is a typical pre war/World War II Dunhill Shell sandblasted pipe, belonging to the collection level of veteran fighters