Depends on who made it and in what configuration.
I believe you have a Marlin 35 Cal. Model 336 CS rather than a C5. Look again.
marlin 35 cal. lever action. rifle/ Marlin makes the rifle ,but not the ammo for it.
Your 35cal marlin was made in 1963.
Will need the serial number to your marlin if we are going to help you on this question.
By including the serial number in your question.
300.00 in good condition
your marlin model 336sc(sport carbine) was made in 1951.
1950
1981
$450
275-350 dollars.