This rifle is better known as a CZ model 618. They were manufactured in the Check Republic in the 1970's
very little is written about this manufacture. All I can tell you is it started in 2005
It was made in the 1970's You did not state the condition of the rifle so no estimate of value can be given. Average value $25
All I can tell you is it was made sometime in the 1970's in the Czech Republic. you will need to give more information about the condition of the rifle to get an estimate of value.
it was made in 1975
you need to state the model number not the serial number to get and estimate of value.
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.
Model number, serial number and features. Then ask that question again here with that information.
This model was made between 1969 to 1992. The serial number indicates it was made sometime after 1982.
If it's not on the outside then very possibly it's under the grip cover
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.