I have a 1926 Ithaca Lefever parts list. Hammer price was $1.00. No distinction for size or whether left or right. As the gauge increased, the angle of the firing pins must have changed. Les Hovencamp, ex-service manager at IGC and owner of Diamond Gunsmithing works on these and would be the definitive authority on Ithaca Lefevers


Walter c. Snyder