Elgin Factory Mainspring for 16s No. 2542 - Steel

Elgin Factory Mainspring for 16s movements, Factory No. 2542, steel, new in possibly distressed, discolored or 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 drop-down list. I likely have several of these so the actual envelope may be different than what is shown. Elgin mainsprings are usually coated in sticky grease and must be well cleaned before use. 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.