WATCH-CRAFT Mainspring 3063W for AS 735, Unitas 190, Cortebert 190, 516, 518 - Alloy

WATCH-CRAFT Mainspring 3063W for AS 735, Unitas 190, Cortebert 190, 516, 518 caliber movements 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 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 satisfactory job of representing the item.