Samsonspring Mainspring No. 656 for Crown 12s No. 1322 - Steel

Samsonspring No. 656 steel mainspring for Crown (NY Standard) 12s, Factory No. 1322, new in envelope. See images for precise mainspring specifications. 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.