Ingersoll Mainspring for Alden Wrist Watches

Ingersoll Mainspring for 6/0s Alden Dollar Wrist Watches from roughly 1939 to 1941 (and perhaps beyond) distributed by Hammel, Riglander & Co in New York, #408 (O.R. #19), measures 7 x 7-1/2 x 12-1/4", hole end, steel. Could also very well fit in other dollar watches as well. I likely have several of these so the one your 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.