Manufactured between ( First Variation ) plunger under the barrel 1934 - 1940. (Second Variation ) Pump under the Barrel 1940-1969.
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Franklin refers to the location of the factory. IE city
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Walter Benjamin founded the Benjamin company in 1899. It was located in St. Louis mo. The first model was called the St. Louis. From 1904 to 1906 the rifles were made in Granite City IL. Production went back to St. Louis in 1906 until 1986. In 1977 Benjamin purchased Sheridan Air Gun Co (Sheridan was located in Racine WI) and moved the production from Racine.
Crosman purchased the combined air gun companies in Feb 1992 and moved them to New York.
In 1936 the name "Benjamin Franklin" appeared on some models and has no significance, except as a marketing ploy.
Source of information (Blue Book of airguns 9th edition.)
It was made in 1961
Benjamin made a 137 pistol not a 137 rifle. They did make a 317 rifle, is this what you are asking about? The pistol model 137 was made between 1946-85 the rifle model 317 was made between 1940-1969
Crosman owns Benjamin air rifles. they offer a service to locate repair shops the repair older Benjamin rifles See the link below
The 312 was part of a series (310 series) of rifles produced between 1940-1969. The name Benjamin Franklin was a marketing gimmick to help sell the rifle. Franklin had nothing to do with it. The series included the model 310, 312 and 317. Please state the current condition of the rifle to get an estimate of value. Is it still working? Is it in Poor, Fair, Good, Very Good or Excellent condition. Re-post you question with this information and I will try to give you an estimate of value. Make sure you put the question in the "Air gun and Air rifle" category.
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.
Model 317 was made between 1940 to 1969. Unfortunately you did not state the condition of the rifle so no estimate of value can be given.
What condition is it in, That determines the value. BTW they all had Brass Barrels.
What is wrong with it. Unable to answer this question.No description of the problem.
Let me guess your Rifle is either a model 310, 312 or 317. It was made in 1965
It was made in 1961
Benjamin made a 137 pistol not a 137 rifle. They did make a 317 rifle, is this what you are asking about? The pistol model 137 was made between 1946-85 the rifle model 317 was made between 1940-1969
Crosman owns Benjamin air rifles. they offer a service to locate repair shops the repair older Benjamin rifles See the link below
Today Crosman owns Benjamin. see the link below for the dates of manufacture.
I can't help you with the photos but the Benjamin model 317 was produced between 1940 - 69. Currently Crosman owns Benjamin. Crosman has a partial list of production dates online. Go to the Crosman home page and click on Customer Service. There you will find a "Date of Manufacture" section. See the related link.
In Excellent condition it would be worth between $200 - $250. That is if it has very little wear. The Black or Nickel finish is in excellent shape. It still holds air and is not dinged up. If any of these conditions exist then the value drops sharply.
The 312 was part of a series (310 series) of rifles produced between 1940-1969. The name Benjamin Franklin was a marketing gimmick to help sell the rifle. Franklin had nothing to do with it. The series included the model 310, 312 and 317. Please state the current condition of the rifle to get an estimate of value. Is it still working? Is it in Poor, Fair, Good, Very Good or Excellent condition. Re-post you question with this information and I will try to give you an estimate of value. Make sure you put the question in the "Air gun and Air rifle" category.
In order to give you an answer, you need to give it some sort of rating like Poor, Fair, Good, Very Good or Excellent condition, without that information, I can not answer you.