HR Nivastar Mainspring GA65 for AS 913, 1171, 1173, Kurth 360 - Alloy

HR Nivastar Mainspring with attached bridle GA65 for AS caliber 913, 1171, 1173, Kurth caliber 360 automatic movements plus perhaps similar ébauche watches, 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 acceptable job of representing the item.