waltham question

[guy champeau]

i am working on a waltham model 1907
SS# 18179188..would anyone know the factory part number for the mainspring..or if there is a site with that information..thanks...

[guy champeau]

i am working on a waltham model 1907
SS# 18179188..would anyone know the factory part number for the mainspring..or if there is a site with that information..thanks...

[Timm]

Model 1907, O size: Mainspring number is 2230.

[guy champeau]

thanks

[Smudgy]

You coukld try http://elginwatches.org/ for the mainspring number, they have a Waltham material catalogue in the technical documents section. Any material house should be able to provide the mainspring by knowing the model and size.