BULGARIA stamps - collecting postage stamps on computer science

BULGARIA postage stamps

21 stamps

ID# 114 click on stamp to zoom	Country Bulgaria Date 03-Oct-2003 Issue Atanasoff Format SH Note John Atanasoff, inventors of ABC (Atanasoff-Berry Computer), first digital mainframe Face v.65 Perf.13 x 13 Print.Lithography Category
ID# 113	Country Bulgaria Date 09-Oct-2001 Issue Dialogue among civilizations Format SH Face v.0,65 Perf.13 x 13 Category
ID# 110 click on stamp to zoom	Country Bulgaria Date 01-Mar-2001 Issue Information society Format SS Note Atanasoff, mainframe ABC, at Face v.0,65 Perf.13¼ x 13 Category
ID# 111 click on stamp to zoom	Country Bulgaria Date 01-Mar-2001 Issue Information society Format SS Note @ - printed circuits Face v.0,22 Perf.13¼ x 13 Category
ID# 112	Country Bulgaria Date 08-Jan-2001 Issue Leonardo Da Vinci Format SH Note computer board under the Leonardo's vitruvian man Face v.0,22 Perf.13 x 12¾ Category
ID# 108 click on stamp to zoom	Country Bulgaria Date 26-Apr-2000 Issue Europa Format SH FDC Face v.0,18 Perf.13 x 13 Print.Lithography Category
ID# 109 click on stamp to zoom	Country Bulgaria Date 26-Apr-2000 Issue Europa Format SH FDC Note Icons, L. Da Vinci Face v.0,60 Perf.13 x 13 Print.Lithography Category
ID# 107 click on stamp to zoom	Country Bulgaria Date 10-May-1991 Issue Europa CEPT Format SH Face v.43 Perf.13 x 13½ Category
ID# 106	Country Bulgaria Date 05-May-1989 Issue Telecommunication Format SH Face v.8 Category
ID# 104 click on stamp to zoom	Country Bulgaria Date 17-Mar-1986 Issue Communist Party Format SH Face v.8 Perf.13 x 13 Category
ID# 105 click on stamp to zoom	Country Bulgaria Date 17-Mar-1986 Issue Communist Party Format SH Note computer design- pixel Face v.13 Perf.13 x 13 Category
ID# 101 click on stamp to zoom	Country Bulgaria Date 23-Sep-1985 Issue International fair young workers Format SH Face v.30 Perf.13 x 13 Category
ID# 102 click on stamp to zoom	Country Bulgaria Date 23-Sep-1985 Issue International fair young workers Format SH Face v.13 Perf.13 x 13 Category
ID# 103 click on stamp to zoom	Country Bulgaria Date 23-Sep-1985 Issue International fair young workers Format SH Face v.5 Perf.13 x 13 Category
ID# 100 click on stamp to zoom	Country Bulgaria Date 04-Aug-1984 Issue National government Format SH Face v.5 Category
ID# 99 click on stamp to zoom	Country Bulgaria Date 09-Jun-1981 Issue Statistics Format SH Note perforated tape Face v.5 Category
ID# 98	Country Bulgaria Date 12-Mar-1981 Issue Party Conference Format SH ST Note perforated tape Face v.23 Perf.13½ x 13½ Category
ID# 97 click on stamp to zoom	Country Bulgaria Date 24-Sep-1980 Issue Plovdiv fair Format SH Face v.5 Perf.13½ x 13 Category
ID# 96	Country Bulgaria Date 08-Sep-1979 Issue Plovdiv fair Format SH Note IZOT-0250 office machine Face v.2 Perf.13½ x 13 Category
ID# 95	Country Bulgaria Date 03-Sep-1978 Issue Plovdiv fair Format SH Note Calculator Elka 55 Face v.2 Category
ID# 94 click on stamp to zoom	Country Bulgaria Date 20-Aug-1974 Issue Communist party Format SH Note continuous computer paper Face v.18 Category

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BULGARIA postage stamps

21 stamps