Marco Mainspring #214 for 18s Waltham Factory No. 2203 - Steel

Marco Mainspring #214 for 18s Waltham Older Model 1877-1879 15j movements, Factory No. 2203, steel, new in envelope. I likely have several of these so one you get may differ slightly from the images. See image for further details. I specialize is hard to find watch parts and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.