If you are asking about the Benjamin Air gun model 342? It was made between 1969-1992
Somewhere between $125 to $145 for an EXCELLENT Benjamin model 342 Rifle.
It is a Benjamin Air rifle. Benjamin Franklin is just a quote printed on the side.Mgf 1968-92the age of your model 342 Benjamin air rifle can be found on crosman's website, but I have saved you the trouble:RIFLE Models: 340, 342, and 347YearStarting Serial NumberEnding Serial Number1968T1000T55291969T5530T613521970T61353T902631971T90264T1139661972T113967T1495341973T149535T1809391974T180940T2104991975T210450T2476511976T247652T2783991977T278400T2982411978T298242T3266991979T326700T3595681980T359569T3795001981T379501T4263051982T426305T430000 &UP
If the number is T131774 then it was made in 1972.
T427432 was made in 1982.
It was made in 1969.
It was made in 1980....
The model 342 Rifle, was made between 1969-1992. In good condition it is worth between $65 to $85.
The Benjamin model 342 ( Currently owned by Crosman Airgun Co) was made between 1969 - 92. In fair working condition it is worth between $50-$70.
1980 see the link below. See the link for your date of manufacture
Crosman owns Benjamin. Crosman offers a service to locate air gun repair shops that repair older air guns. See the link below
you need to state the model number not the serial number to get and estimate of value.
Lets start with. The model 342 was a .22 caliber pellet rifle not a .177 cal bb gun. If you want an estimate of value then you will have to give more information as to the condition of the rifle. with out more information it is not possible to answer you.