NuVigor Mainspring #244 for Hamilton 6/0s Factory No. 2521 - Steel

NuVigor Mainspring #244 for Hamilton 6/0s Factory No. 2521, 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.