HR Mainspring A215 for Hamilton 6/0s No's 2321 / 2521 - Steel

HR Mainspring for 6/0s Hamilton, Factory No's 2321 / 2521, HR #A215, steel, new in envelope. See image for precise characteristics. 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 a pretty good job of representing the item.