HR Quick Fit Mainspring K306 for Peseux 180, 320, Durowe 275, Uwersi 57/10 - Alloy

HR Quick Fit Mainspring K306 for Peseux 180, 320, Durowe 275, Uwersi 57/10 caliber 500 movements plus perhaps similar ébauche watches, white alloy, new in envelope. See images for precise characteristics. I likely have several of these so the one you get may differ 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 a pretty good job of representing the item.