CZECHOSLOVAKIA 1970
EXPO'70 International Exhibition, Osaka, Japan.
Designer : Karel Vodak (all values)
Engravers :
Ladislav Jirka (50h)
Jan Mracek (80h)
Jindra Schmidt (1K)
Printing process : 1 colour engraved & multicolour photogravure
Scott 1674 - 1676



Engraver :
Bedrich Housa (1.60K)
Josef Hercik (2K & 3K)
Printing process : multicolour engraving from flat plates
Scott 1677 - 1679





