New Haven Mainspring for Tip Top Jr. NH 51 - Steel

New Haven Mainspring for Top Tip Jr, N.H. 51, distributed by Hammel, Riglander & Co in New York, O.R. #22, Dennison 13 x 7. Could also very well fit in other manufacturers antique dollar watches. New in envelope. I likely have several of these so the one you get may differ from the images. I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. Images do an adequate job of representing the item.