SN's not required before 1968. 50-150
With the serial number provided,your Glenfield model 60 was made in the year 1973.
Your serial number indicates that your Glenfield model 60 was made in the year 1974.
Your serial number indicates that your Glenfield model 20 bolt action was made in the year 1980.
With the serial number that you have supplied,your Glenfield rifle was made in the year 1973.
your serial number indicates that your Glenfield rifle was made in the year 1977.
Your serial number indicates that your Glenfield model 25 was made in the year 1976.
The serial number on a Glenfield model 20 is located on the left side right behind the barrel on the outside of the breech.
This question cannot be answered without you providing the serial number to you Glenfield model 60 .22cal semi-auto rifle.
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 Glenfield model 75 was made in the year 1972 with the serial number that you have provided.
your marlin/glenfield was made in 1974.