Ingersoll Mainspring Yankee NM & Mickey Mouse Pocket Watch - Steel

Ingersoll Mainspring for Yankee "New Model" & Mickey Mouse Pocket Watch. Measures Dennison 18 x 6 x 21, tongue end, distributed by Hammel, Riglander & Co in New York, O.R. #423. Make sure you need the tongue end (#423) and not the tab end (#23) which also has slightly stronger strength. 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.