I Think I've located the answer to your question.
A short history. Benjamin air rifles and Sheridan air rifles once were separate companies. Sheridan developed the C9 20 caliber series of rifles. Benjamin bought Sheridan and continued to make the C9 20 caliber series rifles. They also made a .177 and a .22 caliber C series rifle called a Benjamin. Crosman bought out Benjamin (in 1992) and decided to continue making the C series. With the name Sheridan on the .20 cal rifle and Benjamin on the .177 & .22 cal rifle some rifles also had the Crosman name on them. ( confused enough?)
Because you have asked for about a Crosman C9 I believe yours in one of the later models. It was most likely made around 1997-2000.
The Crosman model 150 was made between 1954-1967. It is a .22 cal pellet pistol.
Crosman has made several model .22 Caliber pistols. Please state the model number. The condition of the gun and is it still working?
The Crosman Recruit is a pellet rifle not a pellet gun. If you want to see how the rifle is assembled then see the link below for the diagram.
See the link below. It will take you to a page on the Crosman website that will allow you to look upairgun repair shops fro Benjamin and Crosman.
100 USD
Crosman offers a service to locate a repair center for their older guns and rifles. Click on the link below and then at the bottom of the page click on "Find a service center" it will direct you to someone who can rebuild your Crosman pellet gun.
Today, Crosman air gun company owns the Sheridan and Benjamin line of air gun products. Crosman offers a free service to locate repair shops that repair a three products. See the link below.
It's a Crosman 764sb air rifle.
What condition is it in. That determines the value
First, check to see that you have a BB gun, and not a pellet gun. Both pellets and BBs are made in .177 cal. A pellet gun will not shoot BBs (in most cases) If your gun IS a BB gun, you will need a gunsmith to check it for damage, stuck items in the barrel, etc.
See the link below for the parts list and phone number for Crosman.
This model was made between 1966 to 1983 in fair condition it is worth between $45 - $70