The Ithaca/Lefever Nitro Special is a 16 gauge, side by side shotgun manufactured in 1940. The serial number for a Nitro Special made by Ithaca is over 100,000 and can be found on the water table. The letter next to the serial number indicates the gun's grade.
Here are some specs for the Lefever Arms Nitro Special 16 gauge shotgun:
Gauge: 16
Barrel: 26 in solid rib
Finish: Blue/casehardened
Stock: Walnut
 
Firearm purchases require a background check and must be picked up in person by the purchaser
SBR transfers will not be accepted