BESTFIT Mainspring 712C for Amida 510, 515, 820 - Alloy

BESTFIT Mainspring 712C for Amida 510, 515, 820 caliber movements plus perhaps similar ébauche watches, 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.