This Ithaca manufactured firing pin retainer pin is for the model M-66 Supersingle lever action single barrel shotgun and is in very good condition with light wear. (file photo)
Measures: .186" x .457" +/-
Note: Ithaca model M-66 Supersingle lever action single barrel shotguns with the following serial numbers have been observed with this part:
12 Gauge: 17010 & 30958
20 Gauge: 51645