There is no accurate way to answer your question without knowing more about the specific gun. Most of the value will depend on the overall condition and exactly what model of firearm it is. There are also variances of value by region where the firearm is located. As a ballpark figure, a generic Marlin/Glenfield model 336 rifle in used good (80%+) condition should have a value of around $175-$250
Take the first two digits of your serial number, in your case 20 and subtract that from 100. Your gun was made in 1980. Skeeter
the cost 3030 cal 336sc
The Marlin 3030 model is a classic hunting rifle made in 1902. The value of this gun today can reach several thousand dollars.
marlin mod 81 dl 22
The Marlin model 336 will sell for between 200-350 dollars,depending on overall condition.
The answer is 4500
Marlin 336c 3030 The American Hunter #35 of 300... value?
Marlin Firearms was created in 1871.