Your Marlin model 336RC(regular carbine) with the prefix letter of U indicates that it was made between 1960-August of 1961.
Your marlin model 39A was made in the year 1980,with the serial number that you have supplied.
Your serial number indicates that your Marlin model 60 was made in the year 1985.
Your serial number indicates that your Marlin model 39A was made in the year 1981.
your marlin model 1897 was made by marlin in 1903.
Your serial number indicates that your Marlin model 25 was made in the year 1973.
Your Marlin model 60 was made in the year 1996 with the serial number provided.
With the serial number that you have supplied,your Marlin model 60 was made in the year 1976.
Your serial number indicates that your Marlin model 995 was made in the year 1984.
Your Marlin model 780 was made in the year 1977 with the serial number that you have provided.
Your serial number indicates that your Marlin model 781 was made in the year 1972.
Your Marlin model 30AS was made by Marlin in the year 1995 with the serial number that you provided.
The H prefix to your serial number indicates that your marlin model 336A was made by marlin in 1951.