Miracle Power Mainspring for Unitas 6¾ x 8 ligne caliber 190 - Steel

Miracle Power No. 1192 steel mainspring for Unitas caliber 190, 6¾ x 8 ligne movements and perhaps others, steel, 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.