From the same set of 3 s.s.: a cross-dipole antenna to receive weather (cloud-) pictures (background) from weather-satellites.
"Take-off into the Cosmos",Days of soviet sciences and technology in the GDR.Probably some campaign or exhibition,I don´t know. Issued Oct.23rd,1973. (from a set of 3)
Issued July 2nd,1975 (from a set of 4,commemorating the 275th anniversary of the Academy of Sciences).
The "Interkosmos Programme" was the cooperation of the socialist countries in space-research. Stamps issued March 21st,1978.
Interkosmos programme: first flight of a GDR-Kosmonaut Siegfried Jähn together with Waleri Bykowsky from the Soviet Union. First issue,from Sept.4th,1978.
2nd issue,issued Sept.21st. Just now I realized,that the 10 Pfg.-value of the set is missing and that the 35 Pfg. is in twice instead.Quite astonishing,as the 35 Pfg. is the "Sperrwert" (the one stamp of the set with smaller print and restricted sale).The missing 10 Pfg.,with 18 millions,has the highest print of the set and is of minimum value. But such things happen,when you buy a collection,what contains more than 3000 stamps !
"Interkosmos",issued April 11th,1980. "Quintuplet issue" with Bulgaria,Poland,Czechoslovakia and the Soviet Union.
Stamps in the same design as the previous set,but now with face values of 10,20 and 35 Pfg. were issued on Aug.30th,1988. This issue was printed in sheetlets of 4,while the set from June was printed in sheets of 25.