Sandsteel Mainspring for 16s Waltham Factory No. 2218 - Steel

Sandsteel Mainspring for 16s Waltham, Factory No. 2218, steel, new in very frail envelope. See images for precise mainspring specifications. These were available in a couple of different strengths and those that I can supply can be found in the dropdown list.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.