Sandsteel Mainspring for 0s Elgin Pocket Watch No. 825 - Steel

Sandsteel Mainspring for 0s Elgin Pocket Watches, Factory No. 825, DB&H end, steel, new. Could also fit in other watches as well. See images for precise specifications. I likely have several of these so the one you get may differ very slightly from the one shows. 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.