Thank you for your kind words Wolfgang.
Here is a set you might find near and dear!
This is "The Tailor of Ulm" set.
Albrecht Berblinger of the city of Ulm, was a tailor by trade but was very mechanically inclined. He invented the artificial limb with a joint. He also built the first glider wings. People riduculed him and threatened him for working outside the guild on his hobby. He actuall took his invention to a tall hill in the surrounding countryside and successfully was able to achieve flight, although short with his invention.
King Fredrick I of Wurttemburg became interested and sponsored him.
He tried to demonstrate the glider on the evening of May 30th 1811 building a platform on the city walls were the mighty Danube was close. With the King, his 3 sons and the Crown prince of Bavaria in attendance, the flight was aborted and in a second attempt he ended up in the Danube. later understanding of the mechanics of flight would reveal that the cold water of the Danube prevented the updrafts needed for flight.
The GDR celebrated his adventurous design and attempt with a postage stamp.
Hope you enjoy,
Ray