Computer stamps - year 1973 - stamps on computer science

Postage stamps year 1973

ID# 677 click on stamp to zoom	Country USSR Date 12-Apr-1973 Issue Cosmonauts day Format SS Face v.20 Perf.12 x 11½ Category
ID# 678 click on stamp to zoom	Country USSR Date 12-Apr-1973 Issue Cosmonauts day Format SS Face v.20 Perf.12 x 11½ Category
ID# 1306	Country Tunisia Date 17-May-1973 Issue 5th Internat. Telecommunications Day Format SH Face v.75 Perf.14 x 14½ Category
ID# 351	Country Poland Date 20-Jun-1973 Issue American and Russian astronomical observatories in space Format SH Face v.4,90 Category
ID# 350	Country Poland Date 20-Jun-1973 Issue American and Russian astronomical observatories in space Format SH Face v.4,90 Category
ID# 210	Country USA Date 10-Jul-1973 Issue Progress in electronics Format SH Face v.0,08 Perf.11 Print.Lithography Category
ID# 1390	Country Thailand Date 04-Aug-1973 Issue Development of Postal Service Format SH Face v.2b Perf.13½ x 13½ Category
ID# 742	Country Colombia Date 20-Dec-1973 Issue 50th anniversary of Comptroller-general's office Format SH Face v.0,80 Perf.14 x 13½ Print.Lithography Category