Discussion in 'Gunsmithing and Repairs' started by Mark Doty, Feb 18, 2014. These guns were a sales success in that when I purchased a new one in October 10th of 1954 the serial number. The Model 121 was produced until 1954, with just under 200,000 being manufactured. Remington model 12 serial number dates Ammunition, Gear, and Firearm Help > Gunsmithing and Repairs > Remington Model 12.
