That must be a pretty old one, prior to the 'Arrow' (kind of the B2's daddy). They were probably produced in some numbered Collective Ironworks No.332 factory.

I think you could

1. Sell it to a collector of Chinese airguns.

2. Send it off to Steve Pope or Bonnie & Clyde to have the piston fitted with a plastic seal & buttonning plus bore polish and full reblue prior to fitting into a CS800 stock.

3. Burn the stock in your fire and, in an act of wonderful irony, bash the barrel flat with a hammer and send the metalwork off to be recycled in a Chinese steelworks to be made into new Chinese rifles ...

Can we have a picture to drool over?