HR Mainspring SA103 for 18s Elgin No. 812 - Alloy

HR Mainspring SA103 for Elgin 18s, Factory No. 812, alloy, new in envelope. See image for precise mainspring specifications. 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. Note that these sell as fast as I get them.  Images do a pretty good job of representing the item.