HR Nivastar Mainspring G406 for ETA 1301, 1311, Buren 350, Enicar 832, Mido 816, 917 - Alloy

HR Nivastar Mainspring G406 for ETA 1301, 1311, Buren 350, Enicar 832, Mido 816, 917 caliber 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 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.