Hamilton 18s Factory Mainspring No. 232 - Steel

Factory Hamilton Mainspring for 18s Motor Barrel Movements, #232, steel, new in likely very frail envelope. See images for precise specifications. These are usually pretty sticky or have dried on protecting oil so they need to be cleaned carefully before use. I likely have several of these so the one you get may differ slightly from the images but it will have the same specifications. 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.