Original drawing Das Flugzeug. Black marker on paper (no print). Drawing made by Panamarenko during an interview for the book copyright. Including provenance certificate Paul Morrens (co-author book copyright). In prof. frame with art glass and passe-partout. In 1968, Joseph Beuys invited Panamarenko to show »Das Flugzeug«, a plane-shaped helicopter with two propellers, each consisting of three wings, in the Staatliche Kunstakademie Düsseldorf. »Das Flugzeug« itself had already been designed in 1967.