Marco Mainspring #217 for 18s Waltham 21j Model 1892 No. 2222 - Steel

Marco Mainspring No.217 for 18s Waltham Model 1892 Vanguard 21J Railroad Movements, Factory No. 2222, 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 is hard to find watch parts and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.