The R prefix to your serial number indicates that your Marlin model 336 rifle was produced between 1957-1958.
By including the serial number in your question,we will be able to answer when your Marlin model 336 was produced.
With the serial number that you provided,your Marlin model 1893 rifle was made in the year 1899.
Your serial number indicates that your Marlin model 30A was made in the year 1979.
1995.
2.50
You need to include a serial number to get a answer.
The letter F prefix to your serial number indicates that your Marlin rifle was made in the year 1949.
Made between 1936 and 1945
1968.
I would check the lower tang,under the lever.
The rifle is a marlin 336. Serial number is located on the lower tang under the lever.
Your Marlin model 336RC(regular Carbine) was made in the year 1966 with the 2 letter prefix of AB to your serial number.