Some new pictures of the prototype for the “Leuchtkörper” from 1991 – a pyramid shaped lamp in acryl.
The lamp that later was put in production had three sides. This prototype was a test and Verner Panton gave it four sides. As far as I know this is the only one in the world with four sides.
The last picture shows it next to another white one-off prototype in acryl – a Light Sculpture with black and red lines on the outside.