NuVigor Mainspring #161 for 18s Waltham Factory No. 2222 - Steel

NuVigor Mainspring #161 for 18s Waltham Model 1892 movements, Factory No. 2222, steel, new in possibly frail envelope. See images for precise mainspring specifications. 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.