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Welcome Aboard IHC185™ Internet Horology Club 185 IHC185™ Discussion Site Main Page Open to the World RESEARCH FORUMS Hamilton and 992B Research Forum 992B U.S.Govt.
Internet Horology Club 185 IHC185™ Discussion Site Main Page Open to the World RESEARCH FORUMS Hamilton and 992B Research Forum 992B U.S.Govt.Related Content: Military Timepiece Discussions - EXCLUSIVE!
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| IHC Member 1357 |
Just got this S/N C74820=1943 U.S.Govt on movement  | ||
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| IHC Member 1357 |
most. C74820  | |||
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| IHC Member 1357 |
case back  | |||
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Below are what the various U.S. Army Ordnance Deparment codes mean: OA - 7 to 9 jewel pocket watches OB - 15 to 17 jewel pocket watches OC - 7 to 9 jewel wristwatches OD - 15 to 17 jewel wristwatches OE - 21 jewel railroad grade pocket watches OF - 15 to 17 jewel wristwatches with waterproof case OFA - 15 to 17 jewel wristwatches with waterproof case, Air Corps (Navigation, Type A-11, substitute standard) OG - 7 to 9 jewel wristwatches (waterproof cases) OS - stopwatch OW - 7 to 9 jewel pocket watches made before Nov. 12, 1940 and remarked later OX - 15 to 17 jewel pocket watches made before Nov. 12, 1940 and remarked later OY - 7 to 9 jewel wristwatches made before Nov. 12, 1940 and remarked later OZ - 15 to 17 jewel wristwatches made before Nov. 12, 1940 and remarked later | ||||
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