Marco Mainspring #170 for 0s & 3/0s Elgin movements No. 2097 - Steel

Marco mainspring No. 170 for Elgin 0s & 3/0s movements, Factory No. 2097, steel, new in frail envelope. See images for further details. I likely have several of these so the one you get may differ slightly from the images. 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.