Sandsteel Mainspring for Elgin 8/0s Factory No. 5219 - Steel

Sandsteel Mainspring for Elgin 8/0s movements, Factory No. 5219, steel, new in envelope. See images for precise mainspring specifications. These come in a couple of different strengths ant hose that I can supply can be found in the drop-down list. I specialize in hard to find watch parts and all watch parts are guaranteed. Images do a pretty good job of representing the item.