A.H. Harris Handy Mainspring for N.Y. Standard 16s No. 3196 HOLE - Steel

Handy Mainspring from A. H. Harris for N.Y. Standard 16s movements, Factory No. 3196, HOLE end, steel, new in envelope. See images for precise characteristics. These came as both HOLE end and T end so make sure you're getting the one that's correct for your movement. Likely have several of these to 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.