HR Nivastar Mainspring G323A for Bettlach 1504 - 1570 - Alloy

HR Nivastar Mainspring G323A for Bettlach 1504 - 1570, caliber movements, white alloy, new in envelope. See images for precise mainspring specifications. 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.