Sandsteel Mainspring for 16s Elgin No. 817 - Steel

Sandsteel Mainspring for Elgin 16s Movements, Factory No. 817, steel, new in very frail envelope. See images for precise mainspring specifications. These were available in several 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 pretty good job of representing the item.