HR Mainspring A602 for South Bend 16s No. No. 27528 - Steel

HR Mainspring A602 for South Bend 16s Studebaker Models, No. 27528, T-end, steel, new in overly handled envelope. See image for further details and precise specifications. I likely have several of these so the one you get may differ slightly from the images. I specialize is hard to find watch parts and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item