Benjamin Franklin BB rifles were made by Benjamin air rifle. The name Franklin was added as a marketing ploy. Walter Benjamin founded the company in 1899. Today Benjamin is owned by Crosman Airgun Corp. If you have any other questions then you need to state the model and condition of the rifle.
Crosman makes about 50 different '''RIFLES''' you need to state the model you are asking about. See the link below for Crosman rifle owners manuals
Crosman still has parts for this rifle. contact Crosman at the link below (Customer service) and order the parts you need.
THIS IS A CROSMAN. It is a Crosman model 140 or 1400
In order to give you an estimate of value, I need to know the current physical condition of the rifle. YOU need to give it some sort of rating like "Poor, Fair, Good, Very Good or Excellent condition." Without some rating it is not possible to answer you. Today Both Benjamin and Sheridan are owned by Crosman Air gun company.
Crosman air gun company owns Sheridan. Crosman offers a free service to locate shops that repair Crosman products. See the link below.
Contact Crossman or one of their repair centers.
The Super Streak B1500BTM is .177 caliber rifle. What do you want to change it to?Go to (see the link below) and on the home page, at the bottom, you will find "Download manual / Parts Diagram" open it and select "Benjamin Sheardon pistols and rifles"At the top of the page you will find a parts manual with diagrams along with how to contact Crosman for the parts that you need.
It would help if you stated the model number. Crosman made several pellet rifles for Sears. You need to provide more information.
NoBenjamin Sheridan is now owned by "Crosman air gun." Go to (See the link below) and on the home page click on "Find a service center" at the bottom of the page. Fill in the information and It will bring up a page that list several places that repair older Benjamin air rifles and guns.
You have several choices. Crosman (Who owns Benjamin) offers a free service to locate shops that repair Benjamin air guns or rifles. (See the link below) Or you can search the web for a repair shop that repairs airguns (there are several around the country) search for "Airgun Repair." 1# http://www.crosman.com/cs/service-center
The model G is also known as the model 200. It can be very valuable, but I need to know the condition of the rifle first to give an estimate of value. Is it still working? Is it in excellent, very good, good, fair or poor condition? It was made sometime between 1910-1935. I am not sure how to judge the condition really. All parts are there, wood handle looks fine, no cracks. Barrel looks good. I would say it is in very good condition. It does not hold air though. All parts appear to be there. From what you say. I can estimate the Value at around $125 -$160. I would think the rifle can be repaired. Crosman air guns owns Benjamin. If you want it fixed, go to the link below and click on "find a service center" when the Crosman home page opens up.