The major air rifle manufacturers are Gamo, Crosman, Benjamin, UTG, Daisy, RWS, Beeman, Mendoza, King Arms, Hornady, Beeman, Air Arms, Air Venturi, etcetera.
it all depends on the condition of the rifle.
Currently it's the Beeman RX-2 at 1125 FPS in a .177 pellet
This rifle was made in Germany from 1986 to 1995. In Very good condition it would be worth between $260 to $325
Beeman usually has the Model number on the side of the barrel by the loading port or on the barrel by the hinge on break barrel rifles.
They are made in China. Beeman sells them here in the USA. Beeman owns Marksman
It would help tremendously if you told me who made the rifle. There are over 1000 different models of air rifles. Was it made by Gamo, Crosman, Daisy, Beeman, Diana, Airforce or another brand? Just the model number alone does not give me enough information to answer you.
Beeman has gone through several changes, right now they are located in Santa Fe Springs california. I own a few Beeman air products and the box said China on it.
Beeman makes several good air rifles & guns. I know of 3 different "Sportsman SS" series that shoot .177 pellets And the RS1 Sportsman that comes with 2 barrels .177 & 22. But I know of no Beeman Air Gun called Sportsman. Just the Sportsman Rifle. If you are talking about the RS1, then yes I would have to say it is a good rifle for the price.
K-Mart and I have seen them at other sporting-good stores
Usually it printed on the left side of the breech or barrel.
Beeman model Falcon 1&2 were made in Spain between 1981-84