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Elgin 15/0s or waltham 15/0s

Murks
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clockboy Distinguished Member

clockboy

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Your quest is difficult to say the least. A donor movement of eBay could be your best bet. Getting the correct strength and size of hairspring is really difficult because you need to know what strength and size of spring you need and measurements are difficult to achieve accurately. 

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JohnR725 Distinguished Member

JohnR725

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as those are American pocket watches what you need is the serial numbers. Then depending upon when they were in existence you can look in the parts catalog and figure out which hairspring you're supposed to get. But finding something for watch made possibly 100 years ago that will be the challenge.

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JohnR725 Distinguished Member

JohnR725

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1 hour ago, Murks said:

waltham 750b 

attaching the parts list for the Waltham watch as you can see there are two separate hairsprings.

looking at eBay I see one of the hairsprings. also on eBay is the movement starting at around $20 in various conditions needing repair

https://www.ebay.com/itm/143452463912

 then considerably more expensive but I see they have one of the hairspring here.

https://www.ofrei.com/page824.html

 

 

Waltham 750B.jpg

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