This question cannot be answered,unless you provide the serial number,and any letter prefix to your serial number.
Model variation
Your Marlin model 336RC(regular Carbine) which was made in the year 1948 will bring between 200-350 dollars,depending on overall condition and a good bore.
Proofhouse.com has Winchester sn data
You will need a model number not just the caliber
Impossible to answer without the sn and maker.
1967
Proofhouse.com has sn data
1954
No sn data published.
The M prefix indicates 1955 mfg. Starting on April 14,1955, the last digits of the serial number were etched on the bottom of the bolt of the 336. http://armscollectors.com/sn/marlinlookup.php
1974 regards russ
February 24.1997