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Welcome Aboard IHC185™ Internet Horology Club 185 IHC185™ Discussion Site Main Page Horological Discussions, Questions and Answers Pocket Watch Discussions Hamilton 992b mainspring numbers
Internet Horology Club 185 IHC185™ Discussion Site Main Page Horological Discussions, Questions and Answers Pocket Watch Discussions Hamilton 992b mainspring numbersGo | New Topic | Find-Or-Search | Notify | Tools | Reply to Post | |
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Does anyone have the numbers and sizes for the 3 different mainsprings for a Hamilton 992b? Thanks Ed | ||
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IHC Life Member  |
Ed, # 534, 534B & 354 are the ones that I believe are for a 992B....I could be wrong, there will be others that may set us straight.... Good Luck, Regards, Jerry | |||
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I have a 1951 992b that I can only get a 24 hour run out of. I have an extra Dynavar #35434 standard strength 370. I do not know which spring is in it until I take it apart and measure it. It could be the weaker of the three, or it could be the standard 370. I wanted to get a heads up on the numbers of the three to make a decision when I get all the info together. Ed | |||
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Ed, These charts should be useful. RR From 1951 Hamilton Watch Materials Page  | |||
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Here are some newer numbers. RR From 1961 Hamilton Parts Catalog Page 82  | |||
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Richard, thank you very much. That is exactly what I was looking for. Ed | |||
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