Sandsteel Mainspring for Elgin 12s Factory No. 2339 - Steel

Sandsteel Mainspring for Elgin 12s, Factory No. 2339, steel, new in envelope. See image for further details and precise mainspring specifications. These were available in a couple of different strengths and those that I can supply can be found in the drop-down list. 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 marginally adequate job of representing the item.