Borel Mainspring JA423 for 12s Illinois Pocket Watches No 47343 - Alloy

BOREL Mainspring MS-JA423 for 12s Illinois movements, Factory No. 47343, alloy, new in open package. 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 suitable job of representing the item.