Samson Mainspring No. A55 for Kurth 10½ ligne caliber 360 - Steel

Samson No. A55 steel mainspring for Kurth 10½ ligne 360 movement 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.