1947 and 1948. 1947 had a prefix of "D"
your marlin model 36 was made in 1936-1937,the RC stands for regular carbine.
Your marlin RC (regular carbine) model 36 which has a lower case C prefix was a third model 36 marlin which was made in 1946.
the D in the serial number stands for 1947
Marlin year of manufacture maybe determined from the following table of letter/numeral prefixs to the serial number: In this case, "G" means 1950.
your marlin 336 RC(regular carbine) was made in 1953.
The model 36 Marlin rifle was made from 1936-1947.
The marlin model 36 had the letter prefix of either B for the second variation,or the letters A,SC(sporting carbine),RC(regular carbine),small c prefix in 1946,or large D prefix for 1947.The letter Z was assigned to the model 336 rifles made in the year 1964.It sounds to me that you have a Marlin model 336 which was made in the year 1964.
1951
1954
what year is ak 11351 marlin mod 336 rc made
$300-400
The AA prefix to your serial number dates your marlin model 336 RC(regular carbine) to the year 1965.