Waltham Factory Permaforce Mainspring for 22s 8-Day No. 2275 - Alloy

Waltham Factory Permaforce Mainspring 22s 8 day movements, Factory No. 2275 (equivalent to a 2245 in steel), alloy, new in envelope. See image for further information. These were available in a couple of different strengths and those that I can supply are shown in the drop-down list. I likely have several of these so the one you get may differ slightly from the images. I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.