NuTemper Mainspring #615 for Hamilton 18s Factory No. 15 - Steel

NuTemper Mainspring No. 615 for Hamilton 18s, Factory No.15, T end, steel, new in envelope. See images for precise mainspring specifications. I specialize is 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.