Samson Mainspring No. A62 for Pierce caliber 861 movements - Steel

Samson No. A62 steel mainspring for Pierce 8¾ ligne caliber 861 movements plus 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.