Subtract the first 2 numbers of the serial # from 2000 and that would be the year the gun was manufactured
your glenfield was made in 1968.
Your serial number indicates that your Glenfield model 60 was made in the year 1974.
To determine the age of a Glenfield Model 35 rifle with a serial number starting with "AC," you can refer to the serial number charts specific to Glenfield or Marlin firearms, as Glenfield was a subsidiary of Marlin. Generally, Glenfield rifles manufactured in the 1970s often have serial numbers that begin with "A," and the "C" may indicate a production year around 1972 to 1973. For the most accurate dating, consult resources or forums specializing in vintage firearms or reach out to Marlin's customer service.
1971
1975.
1975.
1970
1968
1980.
1976
Your serial number indicates that your Glenfield model 20 bolt action was made in the year 1980.
Double check your serial number. sales@countrygunsmith.net