de Bolé Mainspring No. 736 for AS caliber 1200, 1201, 1202, Bulova caliber 10BS, 10BC - Alloy

de Bolé No. 736 Redifit Alloy mainspring for AS caliber 1200, 1201, 1202, Bulova caliber 10BS, 10BC movements and perhaps others, 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.