HR Nivastar Mainspring G549 for Roamer 358, Gruen 460, 462, 470, 475 - Alloy

HR Nivastar Mainspring G549 for Roamer 358, O'maire 140 & Gruen 460, 462, 470, 475 caliber movements plus perhaps other similar ébauche watches, 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 an adequate job of representing the item.