HR Nivastar Mainspring G556 for Benrus BM, EA, PUW 80, AS 1299 - Alloy

HR Nivastar mainspring G556 for Benrus BM, EA, PUW 80, Font 60 and AS 1299 caliber movements, 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.