A.H. Harris Handy Mainspring for 16s Hamilton No. 534 - Steel

Handy Mainspring from A. H. Harris for 16s Hamilton RR movements, Factory No. 534, 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 pretty good job of representing the item.