HR Quick Fit Mainspring K349 for Universal 220 & Gruen 215 to 217 - Alloy

HR Quick Fit Mainspring K349 for Universal caliber 220 and Gruen caliber 215, 216, 217 plus perhaps similar ébauche watches, white alloy. See image for precise characteristics. 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 a pretty good job of representing the item.