the year is 1977
53 years old.
Seems to be a descrepency here. There were no model 36 marlins made with Microgoove barrels. The model 336 was made with a Microgroove barrel, and if that's what you have then your's was made in 1972.
With the serial number that you provided,your Marlin model golden 39A was produced in the year 1964.
Your serial number indicates that your Marlin golden 39A was made in the year 1982.
Your marlin golden 39A mountie with the serial number you provided was made by marlin between late 1960-august of 1961.
Your serial number indicates that your Marlin Golden model 39A was made in the year 1974.
When was my Marlin Golden 39-!, SN: s12585 made?Your serial number letter prefix of S,indicates that your Marlin Golden was made between June 1958-1959.
The letter U prefix to your serial number indicates that your Marlin model 39a golden mountie was made by marlin from 1960-aug.1961.
your marlin 39A was made in 1965.
Your marlin model 39a was made in 1965.
Your marlin model 39A with the prefix letter S to the serial number,dates your marlin to the years 1958-1959.
Your serial number indicates that your marlin rifle was made in the year 1978.