look at the date code stamp on the barrel, see related links.
If you know the make, model, and serial number, it may be possible to determine manufacturing date.
Ford used an assembly line to reduce manufacturing costs.
what is the manufacturing date of a marlin rifle model 1893 with the serial number D1624?
1908 Model T was the first car built on an assembly line.
Early 1911
@1964
Manufactured 1909
@ 1974
Serial number, features
With the serial number that you provided,your Marlin model 444S was made in the year 1977.
Sometime between 1937 - 1963. Winchester did not serialize the Model 69/69A, therefore it is not possible to determine a precise year of manufacture.
The serial number