Marco Mainspring #120 for Elgin 16s Grade 575 No. 6161 - Alloy

Marco Mainspring No. 120 for Elgin 16s Grade 575 15j movements, Factory No. 6164, alloy, new in envelope. See images for further details. I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.