HR Quick Fit Mainspring K942 for Longines 4LL, 13/15 - Alloy

HR Quick Fit Mainspring K942 for Longines caliber 4LL & 13/15 plus perhaps 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 very slightly from the images. 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.