Q.C.M. Mainspring For Elgin 18s Factory No. 1956 - Steel

Q.C.M Co. Mainspring for Elgin 18s Factory No. 1956, steel, new in envelope. See images for further details. Not sure what Q.C.M stands for but the mainsprings are marked E.N.Co. so they are factory Elgin mainsprings that a supply house repackaged. 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.