There is some confusion about how Marlin Firearms used their serial numbers to ID the year of manufacture.
The take over happened in so serial numbers starting with the numbers 90XXXXXX need to examined closely as that was a transition year. Remington eventually moved the serial number from the upper tang to the left side of the receiver. If you see REM with a border around it, it is made after the Remington take over. I did find this: On the left side of the barrel near the receiver will be a small jm stamp if it was made before the Rimington take over. Marlins: Marlin or remington manufacture by serial number Anyone have any info related to how to tell where a marlin was manufactured. Thread: Marlins: Marlin or remington manufacture by serial number.
