A.H. Harris Handy Mainspring for N.Y. Standard 18s No. 2189 - Steel

Handy Mainspring from A. H. Harris for N.Y. Standard 18s movements, Factory No. 2189, HOLE end, steel, new in envelope. See images for precise mainspring specifications. I'll note too that these are satisfactory for old Howard N & L movements. 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.