Crosman Air Rifle question...

I have an old, or older (point of view) Crosman Arms Air rifle and I'm thinking of re-habing it back to working shape.
However, I can't find the model number on it? There for I can't track down the parts, and diagrams.
Can anyone help me out here?
Its a single shot pellet with a lever air pump, wooden stock and pump handle and has brass barrel and pump guide. The pump cups are leather as are the rest of the seals. Under the pellet bolt looks to be the serial number # 14985. No other numbers showing and the seal is right side between the trigger and bolt. Left side looks to have had a indexed sight but can't tell for sure.
Thanks in advance for any info. Paul C.