I recently got a Waltham P.S. Bartlett s/n 12543865. Can anyone tell me what the part number of the mainspring is? Thanks in advance...Paul

Paul, my Waltham parts manual says for a 18 size 1883 model, which yours is, the part number is 2205, Main Spring, Resilient, Outer End....

Regards,

Jerry

Thanks Jerry. I am going to order one. Do you know if PTPW is still in or out? Paul

Jerry: Do you know what the original should be for this watch? Paul

Paul, I needed some 2205 springs too and just ordered them from my supplier Casker who has most all Large Pocket sizes;

http://www.jewelerssupplies.co...ing-size-charts.html

at $12.95 ea plus change.

http://www.jewelerssupplies.co...-mainspring-ss2.html

I ordered an extra for you if you want it.

e-mail me at david@glopar.com

Hello Paul....

Here is a portion of pg. 29 of my parts manual....

Pay close attention to the ordering instruction at the top of the page since it is using Main Spring #2205 as an example....

This is the only information I have therefore you will need to make whatever assumptions you can from it....I hope this helps you....

Regards,

Jerry

David & Jerry, Thanks for the info. Paul

Thx for the info and links also. Much appreciated.