HR Quick Fit Mainspring K680 for Cyma caliber 710, 764 - Alloy

HR Quick Fit Mainspring K680 for Cyma caliber 710, 764 Pocket Watch movements plus perhaps other 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.