HR Quick Fit Mainspring No. K556 for Benrus BM, EA, PUW 80, AS 1299 - Alloy

HR Quick Fit No. K556 white alloy mainspring for Benrus BM, EA, PUW 80, Font 60 and AS 1299 caliber movements, 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.