1975
your marlin/glenfield was made in 1974.
With the serial number that you have supplied,your Marlin(Glenfield) rifle was made in the year 1980.
Your Glenfield model 60 was produced in 1989.
With the serial number that you have supplied,your Glenfield rifle was made in the year 1973.
1979.
1975
Your Glenfield model 25 was made in the year 1988.
Your serial number indicates that your Glenfield model 25 was made in the year 1976.
The AB prefix to your serial number indicates that your glenfield was made by the marlin firearms company in 1966.
With the serial number that you have provided,your Glenfield model 60 rifle was made in the year 1976.
With the serial number that you supplied,your Glenfield model 60 rifle was made in the year 1978.
Your serial number indicates that your Marlin model 25 was made in the year 1973.