Your 336 was made in 1996. It depends on the condition, but generally these newer 336's, if in like new condition, will go around $250.
I believe it was manufactured in 1984.....the 84 in 6084 is the year manufactured.
14069
I would date your marlin model 92 to the year 1907.
1958.
1984
Your Marlin rifle was made in the year 1975,with the serial number that you have provided.
Made in 1976.
Send me the serial # so I can tell you which year it was manufactured.
1995.
1975.
1992.
your marlin model 36 was made in 1936-1937,the RC stands for regular carbine.