Samson Mainspring No. 9025 for A.S. caliber 1220 & 1221 - Steel

Samson No. 9025 steel mainspring for AS caliber 1220 & 1221 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.