Marco Mainspring #2750 for Langendorf 1012, AS 954, A. Michel 621, 622, 632 - Steel

Marco No. 2750 steel mainspring for Langendorf (Lanco) 1012, AS 954, A. Michel 621, 622, 632 caliber movements perhaps others as well, 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.