This Ithaca manufactured action bolt assembly - late variation is for the model M-66 12 & 20 gauge Supersingle lever action single barrel shotgun and is in very good condition with light wear and handling marks. (file photo)
NOTE: Ithaca model M-66 shotguns with the following year/serial numbers have been observed with this part:
12 Gauge: 53451
20 Gauge: 51645 & 202920