This 25-Pfennig stamp from the German Democratic Republic (DDR), issued in 1978, celebrates the visit of Soviet and East German cosmonauts to the GDR. It depicts a cosmonaut in a bright red spacesuit floating in orbit, with a spacecraft and Earth stylized in silver and blue tones. The issue symbolizes socialist cooperation in space exploration and honors the historic Interkosmos program that included East German cosmonaut Sigmund Jähn’s spaceflight aboard Soyuz 31. A striking design exemplifying DDR’s pride in scientific and ideological partnership with the USSR.