Unknown shotgun?
I just bought a 12 gauge shotgun at my local farmers market and The only writing on it is a serial number on the receiver and some branding on the barrel. The only writing on the receiver says 1438 and I’m assuming that’s the serial number. The only writing on the barrel says “ marlin firearms co new haven, conn. 12 gauge 2 3/4 mod” and a stamp that says JM. I tried looking it up online and the only marlin model I’m seeing that’s close is the model 120 but it has a different receiver and parts inside are shaped different. Any ideas what it is? Where could I go to find out what it is