WATCH-CRAFT Mainspring 2757W for AS 922, 1280, 1287, MST 352, 371, MV F - Alloy

WATCH-CRAFT Mainspring 2757W for AS 922, 1280, 1287, MST 352, 371, MV F caliber movements and perhaps others, white alloy, new in envelope. See images 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 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.