HR Nivastar Mainspring GA30 for Mido 717, AS 1236 Automatic - Alloy

HR Nivastar mainspring with attached bridle GA30 for Mido caliber 717 and AS caliber 1236 automatic movements, alloy, new in envelope. See images for further data and 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.