Depends on the serial number: Rifles made from 1960 - 1970: The first two digits indicates the year made.
From 1971 - 1999: The first two digits are subtracted from 2000 to give the year made.
From 2000 'til present: Back to the old system of the first two digits indicating the year of manufacture.
1974.
your serial number indicates that your Glenfield rifle was made in the year 1977.
My father-in-law has one and he said he bought it in the late '60's.
straight from marlin
MAY STAND FOR GLENFIELD.
50-100
the gun was made during the 60s and 70s so the stock maybe somewhere there
By the first two digits of the serial number. AB
Glenfield was made by Marlin. Check with a local gun shop.
value marlin glenfield model 60 22 simi auto rifle
manufactured 1970
No sn data published.