Apollo 15. De tre astronauter var til stede ved konferencen den 20. september 1971 i Bruxelles.
An original letter signed by astronauts Jim Irwin, Al Worden and Dave Scott from the Apollo 15 mission. The letter was issued at the XXII International Astronautical Congress on September 20, 1971 in Brussels. This is a rare and historical item for any space enthusiast.
