It would be worth between $60 and $80.
Which Model are you asking about.
The model 100 was made between 1935-1941.
It's usually on the breech or the very back of the pistol.
It was made from 1946 to 1985.
It started in 1946 to 1985
It depends on the Model, Age and Condition of the pistol. Benjamin pistols are still being made today. Benjamin is currently owned by Crosman air gun company.
Auction
Benjamin made this model from 1946 to 1985, but did not start serializing them until 1957. I also have a Benjamin Franklin that has no serial number. Before 1957 it is not possible to set an exact date. Just know it's OLD. The 137 is a .177 caliber pellet pistol the 132 is a .22 caliber pistol and the 130 is a BB pistol.
Some where between $55 - $65 depending on the current condition of the pistol
Somewhere between $125 to $145 for an EXCELLENT Benjamin model 342 Rifle.
This pistol was made between 1935-41. Please state the condition of the pistol to get and estimate of value.
Benjamin made several 22 cal models. Which model are you asking about.