Ingersoll Mainspring Yankee NM Pocket Watch - steel

Ingersoll Mainspring for Yankee "New Model" Pocket Watch. Measures Dennison 18 x 4 x 21 with a distinctly unique Ingersoll tab end, distributed by Hammel, Riglander & Co in New York, O.R. #23. Works with several other Models of the Yankee such as the Mickey Mouse Triumph, Dan Dee, Champion and Equinox. I likely have several of these so the one you get may differ slightly from the images. Images do a marginally adequate job of representing the item.