HR Quick Fit Mainspring K491 for Hamilton 750, 751, Mido 707, Cyma Tav 384, 385, 386 & AS 2410 - Alloy

HR Quick Fit Mainspring K491 for Hamilton caliber 750, 751, Mido caliber 707, AS caliber 1470, Cyma Tavannes caliber 384, 385 & 386, ETA caliber 875 & 2410, PUW caliber 70 plus perhaps similar ébauche movements, white alloy, new in envelope. See images for precise mainspring specifications. I likely have several of these so the one you get may differ 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 a pretty good job of representing the item.