BESTFIT Mainspring 312C for Glycine caliber 16, 81, 81-2, 547 - Alloy

BESTFIT Mainspring 312C for Glycine caliber 16, 81, 81-2, 547 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 a satisfactory job of representing the item.