Marco Mainspring #281 for Waltham Jewel Series 6/0s No. 2235 - Steel

Marco Mainspring #281 for Waltham 6/0s, Jewel Series Model 1912, Factory No. 2235, steel, 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.