The serial number is on the left side close to breachthe first two number on most mod 20 is the year of manufacture.
This question cannot be answered without you providing the serial number to you Glenfield model 60 .22cal semi-auto rifle.
With no serial number provided,I cannot determine the age of your Glenfield model 60 semi-auto .22cal rifle.The value of these rimfire rifles is between 60-110 dollars.
Your serial number indicates that your Glenfield model 60 was made in the year 1974.
With the serial number provided,your Glenfield model 60 was made in the year 1973.
Your serial number indicates that your Glenfield model 20 bolt action was made in the year 1980.
The serial number on a Glenfield model 20 is located on the left side right behind the barrel on the outside of the breech.
Your serial number indicates that your Glenfield model 25 was made in the year 1976.
Your Glenfield model 75 was made in the year 1972 with the serial number that you have provided.
With the serial number that you supplied,your Glenfield model 60 rifle was made in the year 1978.
With the serial number that you have provided,your Glenfield model 60 rifle was made in the year 1976.
Your Glenfield model 60 was produced in 1989.
The year of manufacture for a Glenfield Model 75 with serial number 27345752 1996.