There is absolutely no way to answer this without seeing the gun, however, if you look carefully at the markings on the barrel it is probably marked there.
It was manufactured circa 1921-1931.
The stevens model 9478 shotgun was made between 1978-1985.
The Stevens model 9478 was made from 1978-1985.for a exact year of production,you will need to contact Savage Arms Company who made the Stevens line of shotguns.
Most all Stevens 9478 models were made between 1978-1985
Dating a Stevens 12 gauge model number g20a and serial 12202 is best done by the name on the gun. Where only Stevens appears the gun is likely made between 1940-1991.
try the barrel or receiver.
Your stevens model 9478 was made by savage/stevens between the years 1978-1985.
Look on the top of the receiver with the gun disassembled. You should find it there.
The Stevens Savage Model 124 12 gauge shotgun was made from 1949 to 1954. The serial number will signify the actual year of manufacture.
If it was manufactured before 1968 it probably doesn't have one.
yes it is.