This cannot be answered without you providing a detailed description of the shotguns overall condition,and the model of Marlin shotgun that you have.
Your Marlin model 336RC(regular Carbine) will range in price from 200-350 dollars,depending on the overall condition of the wood and metal,and a good bore.Your serial number indicates that your Marlin model 336 was made in the year 1976.
Your Marlin rifle,not shotgun was made in the year 1972.
Marlin made the model 1898 shotgun,while Winchester made the Model 1897 shotgun,A Winchester model 1897 shotgun with the serial number provided indicates that it was made in 1900.The Marlin model 1898 shotgun was made from 1898-1905.
It is almost impossible to determine what a model number is based only on the serial number.
The Marlin model 1898 shotgun was made from 1898-1905.With the serial number provided,I would sat either 1898,or 1899.
The Marlin model 30G serial number 3512 20 gauge shotgun is valued at $350 in good condition. It is valued at $750 in excellent condition.
can't be answered without the serial number.
The marlin model 28 hammerless shotgun was produced from 1913-1922.
call marlin
The Marlin model 24 pump action shotgun was produced by Marlin firearms company from 1908-1915.
We need a model to start research. You should contact customer service at Remington (who now owns Marlin)
Marlin made them for Sears.