HR Nivastar Mainspring G324 for Gruen 275 - Alloy

HR Nivastar Mainspring G324 for Gruen caliber 275 movements plus perhaps 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.