Hamilton 18s Factory Mainspring No. 14 for 23j Movements - Steel

Hamilton Factory Mainspring for 18s 23j Motor Barrel Movements, Factory No. 14, 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 in hard to find watch parts and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.