HR Mainspring No. 927 for Landeron, Universal & Lemania Chronographs - Steel

HR No. 927 steel mainspring for several wrist watches; Landeron caliber 46, 50 & 70 Chronographs, Lemania 15TL Chronographs and Universal caliber 285, new in envelope. See images for precise calibers supported and 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.