Żwirko and Wigura
Fischer 259 | Michel 280 | Scott C10 | Year of issue 1933 | Pre-war Poland
On 29 August 1932, Franciszek Żwirko and Stanisław Wigura won the Berlin Challenge. They used an aircraft of Polish design, the RWD6.

259
Franciszek Żwirko and Stanisław Wigura
with their RWD6 airplane
Glossary
Franciszek Żwirko (1895-1932), Polish pilot.
Stanisław Wigura (1901-1932), Polish airplane engineer.
Franciszek Żwirko and Stanisław Wigura won the Challenge Cup in 1932 in their RWD6 airplane. Less then a month after the Challenge Cup, Franciszek Żwirko and Stanisław Wigura died in an accident in Terlicko, Czechoslovakia on 11 September 1932.
RWD are the initial letters of Stanisław Rogalski, Stanisław Wigura and Jerzy Drzewiecki, the designers of the airplane.
Relevant pages
Fischer 268-269 (overprints)
Fischer 2658-2659
Fischer Sheet 73
Resources
Franciszek Żwirko
Stanisław Wigura
Challenge 1932
RWD 6