HR Nivastar Mainspring G620A for Amida caliber 515, H. Becker caliber 80 - Alloy

HR Nivastar Mainspring G620A for Amida 515, H. Becker 80 caliber movement plus perhaps similar ébauche watches, white alloy, new in sealed envelope. See images for precise mainspring specifications. I likely have several of these so the one you get may differ very slightly from the images. 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.