Elgin Factory Mainspring for 12s No. 2339 - Steel

Elgin Factory Mainspring for 12s movements, Factory No. 2339, steel, new in a likely frail envelope. I likely have several of these in each of the various strengths so the one you get may differ slightly from the images. Elgin factory mainsprings are often coated in very old grease and must be cleaned before use - the grease can make them look extra special filthy but it actually does a pretty darn good job of protecting them. I specialize is hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.