BULGARIA stamps - collecting postage stamps on computer science

BULGARIA postage stamps

21 stamps

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

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BULGARIA postage stamps

21 stamps