This air rifle was made in 1965.
The Benjamin model 310 is part of a series of rifles that included: 310 BB rifle 317 .177 pellet rifle 322 .22 pellet rifle All were made from 1940 to 1969 Today Crosman owns Benjamin and Sheridan air gun's, see the link below for a partial list of Dates of Manufacture. Scroll down on the list until you find the 310 section. It may help if you have the serial number.
It was made between 1992 to 1998
Yes: Crosman air guns owns Benjamin. On their home page (Crosman.com) you will find at the bottom of the page a place that you can click on "Find a service center" it will lead you to someone who repairs old Benjamin air rifles. Benjamin made these rifles between 1940-1969 in models 310, 312 and 317. One in Very good condition and working order is worth about $80 -$100. See related link.
I believe you are missing a digit. See the attached link. http://www.crosman.com/cs/dates-benjamin
Most likely around late 1956 according to Crosman who owns Benjamin.
Crosman air gun company owns Benjamin air guns. The offer a service to locate a repair center that restores or repairs older air guns no longer being made by Crosman or Benjamin. "Click on the link below" When the Crosman home page opens scroll down and click on "Find a service center" It will assist you in locating someone to repair your Benjamin air rifle.
Yes you can replace the seals or worn parts. OR, Crosman air gun owns Benjamin. Crosman offers a free service to locate shops who repair old rifles. See the link below.
I find two interesting points about this question. The Benjamin model 312 is part of the Benjamin 310 series of rifles 310, 312, 317 made between 1940 and 1969. If there is credit given why is it only on the .22 caliber version, and the second question is. Crosman didn't own Benjamin until 1992 so why would they give credit on such an old air rifle that they were not responsible for making. On Crosmans web site there is NO mention of any type of credit for this model.
Usually it's on the barrel close to the breech. Unless it's a really old Benjamin and then it may not have one.
Contact Crosman: www.Crosman.com they have a service on their web page that directs you to people who repair old Benjamin rifles. Crosman Owns and makes Banjamin rifles. The name Benjamin Franklin was a marketing stunt to sell rifles back in the 60's & 70's. It was made between 1969 to 1992
As far as I can find, Benjamin made a pump handgun model 112 from 1938 to 1941. I could not find anything on a rifle with that model number.