HR Quick Fit Mainspring K601 for ETA 810, Benrus DM, Brac 101, 102 - Alloy

HR Quick Fit Mainspring K601 for ETA 810, Benrus DM, Brac 101, 102 & Cupillard 256 caliber movements plus perhaps similar ébauche watches, white alloy, new in envelope. See images for precise mainspring 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 a pretty good job of representing the item.