Impossible to answer.
it was made in 1975
T427432 was made in 1982.
It depends on the model, but it usually is on the barrel somewhere or the breech below where you load the pellet or BB.
1980 see the link below. See the link for your date of manufacture
It depends on the model, but usually it is right on the barrel or the receiver. If it is really old it may not have a serial number. For a time Benjamin and Sheridan did not serialise their rifles.
The serial number 4279990 is a partial serial number for this rifle. To determine the date the rifle was manufactured you need to provide a complete serial number that begins with letters.
You have listed the model number of your rifle,not the serial number.
Not a serial number if that is on a Sears or JC Higgins rifle. Might be a serial number on an Ithaca rifle. Please list all the markings on the rifle, just as they are on the rifle. sales@countrygunsmith.net
The rifle had the serial number C 2766.
This model was made between 1969 to 1992. The serial number indicates it was made sometime after 1982.
Unfortunately their is no master record of every model air rifle made by model number that is compiled into one list. You will have to give some sort of description of the rifle. Is it a spring powered air rifle or C02 or Pump? Is it made out of wood or plastic? It is a BB or a Pellet air rifle. How long is it? About how old is it? Does it have any markings on it other than the serial number? Is it a multy or single shot rifle? without more information it is not possible to answer your question.
I believe this is a rifle not a gun. Go back and look again for the model number. I think you are giving the serial number and that doesn't help.