Hamilton 16s Motor Barrel Factory Mainspring No. 534 - Steel

Hamilton Factory Mainspring for 16s Motor Barrel Movements, Factory No. 534, steel, new in a possibly frail and/or damaged envelope. These where available in several different strengths and the ones I can supply are shown in the drop-down list. I likely have several of these so the mainspring you receive may differ very slightly from the images. See images for precise characteristics. I specialize is hard to find watch parts and all watch parts are unconditionally guaranteed. Images do an adequate job of representing the item.