It would be worth between $60 and $80.
All the Benjamin air pistols have wooden handle's. the first model was the 100 series (models 100, 122 & 177 made from 1935-41
The Benjamin model 122 went out of production in 1941 at the beginning of WWII. Like any antique you would have to search antique shops or the web. Try Gunbrokers or GunsAmerica on the web.
The Model 122 is a .22 caliber pellet pistol, not a BB or .177 caliber pistol. Pump up the pistol, Not more than 10 pumps. Open the breech by turning the knob at the rear. Pull it all the way back. Load the .22 pellet in the breech. The skirt faces the rear. Close the breech. Rotate the knob to lock it in place. Aim, release the safety and fire.
Approx $75.00 to $150.00 depending on condition, with original box, etc. It's actually a "Benjamin" air pistol, the Benjamin Franklin stamped on the side was just a playful play on words by the company.
The model 122 was part of the Benjamin 110 series of rifles they included the 110, 112 and 117. They were made between 1938 to 41. Today Crosman owns Benjamin. Crosman offers a search service of people who repair older airguns. Click on the Crosman link below and then "click' on "Find a service center" Follow the prompts to find someone who repairs your model.
You do have an old one. The model 122 at the end of the barrel indicated that it is a .22 caliber pellet gun. There also was a model 177 that is a .177 caliber pellet gun and a model 100 that is a BB gun. All these models were first introduced in 1935 and ran until 1941. these were the first production air guns by Benjamin. The name Franklin was added as a marketing gimmick and had nothing to do with Ben Franklin. today Crosman owns both the Benjamin and Sheridan line of airguns. If you want a estimate of value then give it a rating like Poor, Fair, Good, Very-Good or Excellent and I will try to give you an answer.
Crosman airgun company owns Benjamin air guns along with Sheridan air guns. Crosman offers a service to locate repair shops that repair older air guns and rifles. Go the the Crosman link below and when it opens, click on "find a service center" at the bottom of the page. It will help you locate someone to assist you. ALSO on the same Crosman home page you will find "Download a manual" Crosman still has manuals available for download. The 122 is part of the 100 series of air guns, so when you find the Benjamin manual for the model 100 download it. It's the same manual for the 122.
The 137 is part of the 130 series of pistols made between 1946 to 1985. The 130 was a BB gun, the 132 was a .22 caliber and 137 was a .177 caliber pellet pistol. See the link below for the owners manual
In order to give an estimate of value I need to know the condition of the rifle, model 122 "CG". Is it still working? Is it in Excellent, Very good, Good, Fair or Poor condition? The Rifle was made sometime between 1946 - 1950.
50- 7000
The 122 model Filmo projector, is one of the oldest and best looking of the Bell & Howell line, but there is not much value there $ 25.00 $35.00 on ebay, a great display item, just no real monetary value.