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Mainspring for a Waltham model 1883 18 size?

1908

Registered User
Sep 10, 2021
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Hello,

Could someone please tell me if this the correct mainspring for a Waltham model 1883 7 jewel movement (1889)?

WALTHAM P/W MAIN SPRING #2205 T x .22mm 18s Model 1883 STEEL

Many thanks for any help

Stephen
 

TaborClock

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Jan 17, 2009
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Yes, the #2205 is the correct spring for the model '83. Note, however, that steel springs have not been made in decades and may be set and/or subject to rust.
White alloy springs are available on line. Ebay, Dave's , etc. Worth the investment for anything you want to carry. Make sure your safety pinion works if you use blue steel....
 
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MrRoundel

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Dec 28, 2010
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If you see that there are a few different strengths, or thicknesses, offered, yours probably needs the thicker/stronger one. Generally the lower jeweled grades take the stronger and get thinner as the watch gains jewels. Good luck.
 
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1908

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Sep 10, 2021
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Glad I asked here first before making a mistake. I never realised there are springs made in white alloy. I'll look for the thicker and stronger spring. Many thanks all.

Stephen
 
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