A.H. Harris Mainspring for Elgin 12s Factory No. 2339 - Steel

A. H. Harris Mainspring from Elgin 12s movements, Factory No. 2339, steel, new in envelope. I likely have several of these so the one you get may differ slightly from the images. I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. Images do a satisfactory job of representing the item.