Jurgensen Mainspring #595 for Elgin 18s Factory No. 812 - Steel

Jurgensen Mainspring No. 595 for Elgin 18s, Factory No. 812, steel, new in frail envelope. See images for further details and precise mainspring 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 an adequate job of representing the item.