This is a fully functional vintage keyboard which I believe is from the late 70s. I added new sticky pads on all of the keys and I added a large washer for the 1/4" output to stabilize it better. See pictures for any scuffs and scratches and details.
Because it is passive, it does not require power so you can plug it directly into an amp to play.
You can see videos of it working straight from Wiki:

Approximate manufacturing span 1977–1982

The Pianet T has a rectangular case profile with rounded corners and a hinged integral lid with central handle. With the lid latched closed the instrument forms its own carry case. The body of the case is covered with black vinyl leathercloth and the ends are padded with vinyl skinned urethane foam. There are no legs supplied as standard. An optional stand can be fixed to threaded mounting points on the ends of the case. The keys are injection moulded plastic over pressed metal frames. The words 'Pianet T' are screen printed in silver on the rear of the case and on the inside surface of the lid.