Waltham - 16 '43 - T A mainspring

[easthammer]

Hi All,

I brought a Waltham stop watch a while back spares or repair. Finally took it apart to have a look and it doesn't have a mainspring in it. Even though I dont fully understand how it works I think putting one in would be a good place to start. Rest of the watch seems ok so hoping power will get it working to an extent.

Can anyone here point me in the right direction on sourcing the correct one? 

Movement states - Waltham - 16 '43 - T A

 

 

[easthammer]

Potentially this might work? - https://www.ebay.co.uk/itm/Waltham-Watch-Mainspring-2208B-2-30-x-22-x-28-x-540-T-16s-1862-Made-in-U-S-A/254357769331?hash=item3b38e78c73:g:SpcAAOSwRjVdenTQ

 

[JohnR725]

I always find it helpful with mainsprings to measure whatever you have. Then you can compare it to a reference book just to make sure everything is right.

[jdrichard]

Measure the thickness of the spring (strength), the width and if you can the length. If you have nothing to measure, get the barrel diameter and width inside and go to Cousinsuk.com. If you email them with the watch type and serial number, they should be able to get a fit.
Here is a video I made on mainsprings.

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[jdrichard]

Hi All,
I brought a Waltham stop watch a while back spares or repair. Finally took it apart to have a look and it doesn't have a mainspring in it. Even though I dont fully understand how it works I think putting one in would be a good place to start. Rest of the watch seems ok so hoping power will get it working to an extent.
Can anyone here point me in the right direction on sourcing the correct one? 
Movement states - Waltham - 16 '43 - T A
 
 

Need the serial number of the movement and a few pictures would be good.


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