What is the value of a hahn super repeater gas powered BB rifle?

The PY HAHN (rifle) was made from 1958 to 1971. If you want an estimate of value, you need to give it some sort of (condition) rating like: Poor, Fair, Good, Very Good or Excellent condition. You also need to state if it is still working and holds C02 without leaking.

Then I can give you an estimate of value.