BESTFIT Mainspring JA312 for 6s Hampden Factory No. 8696 - Alloy

BESTFIT Mainspring MS-JA312 for Hampden 6s Movements, Factory No. 8696, T end, alloy, new in envelope. See image for precise mainspring specializations. I likely have several of these so the one you get may differ slightly from the images. I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. Images do an adequate job of representing the item.