Elgin 15/0s or waltham 15/0s

[Murks]

I'm looking for a hairspring that fits both of this movement does anyone know where a could find some elgin and waltham 15/0s?

 

[clockboy]

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. 

[JohnR725]

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.

[Murks]

There not pocketwatches but wristwatches yes it is american movement waltham 750b 

[JohnR725]

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