CZECHOSLOVAKIA stamps - collecting postage stamps on computer science

CZECHOSLOVAKIA postage stamps

ID# 840	Country Czechoslovakia Date 06-Jul-1987 Issue 125th Anniversary of Scientist Union Format SH Face v.50 Perf.11½ x 12 Category
ID# 839	Country Czechoslovakia Date 06-Jul-1987 Issue 125th Anniversary of Scientist Union Format SH Face v.50 Perf.11½ x 12 Category
ID# 838	Country Czechoslovakia Date 28-Oct-1982 Issue Communist party congress Format SH Face v.3 Perf.12 x 11½ Category
ID# 837	Country Czechoslovakia Date 10-Jun-1981 Issue Successes of socialist achievements exhibition Format SH Face v.2 Perf.12 x 11½ Category
ID# 836	Country Czechoslovakia Date 28-Sep-1979 Issue Definitives Format SH Face v.1 Perf.11½ x 12 Print.Photogravure Category
ID# 835	Country Czechoslovakia Date 26-Sep-1966 Issue Space explorations Format SH Face v.1 Perf.11½ x 11½ Category