Marco Mainspring #211 for 16s Waltham Factory No. 2218 - Steel

Marco Mainspring #211 for 16s Waltham Model 1888 (7j to 15j) Pocket Watch, Factory No. 2218, steel, new in 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 and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.