Mellotronists

Dear All

I recently had a meeting with a salvage company in Devon England, In a corner i saw a little keyboard .

When I cleared some stuff  of it i found it was a Phiilips Phillicorder !!

Any idea what one of these is , is it rare should I buy it or is it just a piece of dutch crap best left in the rubbish dump

Discuss

Regards

John