Sandsteel Mainspring for Hampden 3/0s #9696 - Steel

Sandsteel Mainspring for Hampden 3/0s movements, Factory No. 9696, steel, new in possibly very frail envelope. See images for further details. These were available in a coupe of different strengths, and those that I can supply can be found in the drop-down list. 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.