Sandsteel Mainspring for 18s Elgin No. 812 - Steel

Sandsteel Mainspring for Elgin 18s Movements, Factory No. 812, steel, new in possibly frail envelope. See images for precise mainspring specifications and further details. These came in a couple of different strengths and those that I can supply are shown in the drop-down list. 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.