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 20 bolt action was made in the year 1980.
The serial number is on the left side close to breachthe first two number on most mod 20 is the year of manufacture.
On my model 20 its on the left side of the barrel directly up from the clip.
Around $100.
It would have to be older than the implementation of the Gun Control Act of 1968, which mandated that all cartridge firearms have a serial number.
Databases listing firearms by serial number are not available for public access, so this question can not be specifically answered. However, the Marlin Model 20 was manufactured from 1960 to 1966, meaning any firearm of that model would be between 53 and 59 years old.
Subtract the first two digits of the serial number from 100 and that will be the year of manufacture for this rifle. 100 - 27 = 73 "1973"
The Marlin model 20 was introduced in 1966. It became the model 80. Value is approx. $125. to $160. Answer courtesy of Teddy Roosevelt at Gallery of Guns
JC Higgins Model 20 Shotgun does not have a serial number. Guns were not required to have a serial number before 1938
A 20 hp Mercury outboard, serial number OG156340, is a 1995 year model.
I'm not too sure of the value, but a Glenfield is a low end Marlin produced to make them more affordable, I own one and have become quite attached to it, the only complaint I have is the quality of the ammo clip. UPDATED ANSWER - A used model 20/25 in good or better condition (80%+) has a value of around $70-$120.
can you tell the age of a model 37a 20 gage Winchester by looking at the serial number