1965
The G makes the number come up as invalid. Without the G, it comes back with a manufacture date of 1971
Your winchester model 9422 magnum 22cal.rifle was made by winchester in 1978.
The model number you have netered is invalid. Winchester serail numbers only run from 1 - 5103249. Once you figure out the proper number go here and they will tell you the date of manufacture: http://armscollectors.com/sn/winlookup.php
The year of manufacture for serial number 801666 is 1965. From the ever popular web site http://armscollectors.com/sn/winlookup.php
your winchester model 70 was made by winchester in 1972.
Your winchester model 9422 was made by winchester in 1991.
Your winchester model 9422 was made by winchester in 1973.
Your Winchester 2314645 is a 1958. bobadink3.
You will need to supply a model number along with this serial number to get a year of manufacture for your Winchester.
If you would post the serial number and model number,I can give you a date of manufacture.
Your Winchester model 1894 was produced by Winchester in 1912.
Your winchester model 1894 rifle was made by winchester in 1981.