HR Nivastar Mainspring G236 for Bidlingmaier 50, AS caliber 846 - Alloy

HR Nivastar Mainspring G236 for Bidlingmaier (Bifora) caliber 50 & AS caliber 846 plus perhaps many more similar ébauche watches, alloy, new in envelope. See image 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.