Samson Mainspring No. 1049 for Kurth caliber 74A - Steel

Samson steel mainspring No. 1049 for Kurth caliber 74A movements and perhaps others, 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.