A table of serial numbers and years of manufacture from American watch ... the number marked on the movement and the one marked on the case. ... makes of watch, along with nice histories about the companies themselves. ... (Keystone):
Keystone watch case company serial numbers
Howard Pocket Watch Serial Numbers / Dates: ... Year, Serial No, Series, No Produced. 1858 - 1860 ... Keystone Watch Case Company, Jersey city, NJ 1903-30. KEYSTONE WATCH CO. MOVEMENT SERIAL NUMBER: 340959. PAT. DUST PROOF | PATENT PINION | PAT. S.W.. Gross Weight: 134.9g. Case Width: 54mm.. Feb 3, 2021 — Each company has used different styles of serial numbering in order to index their ... Bulova watch identification numbers are split into 2 major parts, the ... Starting from 1950, the back case of the watch will contain a letter and a number following it. ... (FRANCE/GAMMA-KEYSTONE VIA GETTY IMAGES). 939c2ea5af
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