1931 to date
There are serial number tables that have been published.
send me the serial number and I might be able to tell you when it was made..............
Usually by the serial number. If no serial number, then by features
by the serial number
Serial number and or proof marks
If you contact the manufacturer and give them the serial number and model they will be able to tell you.
Can't tell model number from just the serial number.
Impossible to answer without the serial number. You can call Colt and they will tell you.
The question can not be answered since a serial number was not given. If you have the serial number, you can call Colt and they will tell you.
Serial number, features
Proofhouse.com has Winchester serial number tables.