HR Mainspring SA130 for Elgin 21/0s Factory No. 5327 / 6004 - Alloy

HR Mainspring SA130 for 21/0s Elgin, Factory No. 5327 / 6004, alloy, new in envelope. See images for precise mainspring specifications. I specialize in hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.