The caliber should be marked on the barrel near the receiver. The Model 39 is a 22LR
The J prefix to your serial number indicates that your marlin model 39A was made in 1952.
This Marlin 39A Mountie .22 Caliber Lever-action rifle with serial number R5077 was manufactured between 1957-1958.
Your marlin model 39a golden was made by marlin in 1964.
your marlin 39A was made in 1965.
Your marlin model 39a was made in 1965.
When was Model 39A serial n7010 made
Your marlin model 39A was made in the year 1980,with the serial number that you have supplied.
The L prefix to your marlin model 39A indicates that it was made by marlin in 1954.
Your marlin model 39A with the prefix letter S to the serial number,dates your marlin to the years 1958-1959.
The H prefix to your serial number indicates that your Marlin model 39A was made in the year 1951.
With the serial number that you provided,your Marlin model golden 39A was produced in the year 1964.
Your serial number indicates that your Marlin model 39A was made in the year 1981.