I can not give the exact date of manufacture, however, the model 66-1 was produced from 1977 (change of gas ring from yoke to cylinder) until 1982 (in 1978 the 6" barrel was introduced).
In 1982 came the 66-2 (Eliminate cylinder counterbore and pinned barrel; slight change in cylinder lenght to 1.62"
1980
what is the manufacturing date of a marlin rifle model 1893 with the serial number D1624?
No sn = no way to answer.
Early 1911
@1964
Manufactured 1909
@ 1974
Serial number, features
With the serial number that you have provided,your Winchester model 1894 rifle was made in the year 1913.
With the serial number that you provided,your Marlin model 444S was made in the year 1977.
@ 1980
1950. DC