BESTFIT Mainspring 4515W for Felsa 21, 22, 81, Gruen 265 - Alloy

BESTFIT Mainspring 4515W for Felsa 21, 22, 81, Gruen 265 caliber movements plus perhaps similar ébauche watches, alloy, new in envelope. I likely have several of these so the one you get may differ slightly from the images. See images for precise specifications. 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 an adequate job of representing the item.