Newall Security Mainspring #518 for 16s Waltham No. 2208 - Steel

Newall Security mainspring No. 518 for 16s Waltham Model 1872 Movements, Factory No. 2208, steel, new in 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 so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do an adequate job of representing the item.