U.S.A. (1906) Mechanical counter. 2c postal stationery envelope with corner ad for Bristol Counter. C. J. Root, Bristol, Connecticut.
$10
FRANCE (1972) Numeric keypad*. Hand holding stylized pen*. Use of postal codes. Philatelic First Day document with special engraving thematically related to the stamp and printed description and explanation of the stamp on the reverse. Scott Nos 1345-6, Yvert Nos 1719-20.
$10
FRANCE (1972) Numeric keypad*. Hand holding stylized pen*. Use of postal codes. Scott Nos 1345-6, Yvert Nos 1719-20.
$3
MALI (1977) Computer circuit*. Telephone*. Imperforate. Scott No 279, Yvert No 281.
$5
GABON (1977) Computer circuit*. Telephone*. Deluxe sheet. Scott No 376, Yvert No 372.
$10
GREAT BRITAIN (1982) Information technology*. Set of 2 maximum cards. Scott Nos 1000-1, Yvert Nos 1056-7.
$10
SWITZERLAND (1983) Computer printouts*. Maximum card with First Day cancel. Scott Nos 735, Yvert No 1176.
$10
BELGIUM (1984) Computer monitor*, keyboard*. First Day cover with commmemorative Cancel. Belgian technology exports. Scott No 1164, Yvert No 2116.
$5
BELGIUM (1984) Computer monitor*, keyboard*. Maximum card with First Day Cancel. Belgian technology exports. Scott No 1164, Yvert No 2116.
$5
GERMANY (1984) Medieval document*. First Day cover with circular Archive Congress cancel. Scott No 1425, Yvert No 1053.
$4
GERMANY (1984) Medieval document computer*. Maximum card with oval Archive Congress cancel. Scott No 1425, Yvert No 1053.
$5
GERMANY (1984) Medieval document computer*. Maximum card with circular Archive Congress cancel. Scott No 1425, Yvert No 1053.
$5
GERMANY (1984) Medieval document*. First Day cover with circular Archive Congress cancel. Scott No 1425, Yvert No 1053.
$5
FRANCE (1985) Computer keyboard*. Map of world*. Maximum card with thematic cancel. National Information System. Scott No 1990, Yvert No 2391.
$5
EAST GERMANY (1985) Train signal control room*. Maximum card with thematic cancel. Scott No 2496, Yvert No 2591.
$5
FRANCE (1986) Computer terminal*. Plane*. Satellite*. Illustrated cancel on envelope "De L'Aeroplane d'Hier aux Télécommunications de Demain."
$5
(Image b)
$3
GERMANY (1987) Computer software. Cancelation of 87 Computer Software Electronics, Koln.
$4
SOUTH KOREA (1989) Information Industry. Unaddressed FDC with cachet and thematic cancel. Scott No 1536.
$5
SWITZERLAND (1991) Videotex terminal. Line cancelation on envelope "Die Zukunft der Schweiz - VIDEOTEX - Das geniale Telefon." A precursor to the internet!
$10
ROMANIA (1998) Man sitting in front of PC*. Postal card (N).
$3
ROMANIA (1999) Computer*. Space shuttle*. Postal card (N) with illustrated ad for portable computer.
$3
VENDA (1990) History of writing. Unaddressed FDC with cachet and thematic cancel. Scott Nos 209-12.
EAST GERMANY (1966) Computer mainframe*. Milling machine*. Leipzig Spring Fair. Scott Nos 811-2, Yvert Nos 856-7.
FRANCE (1986) Computer chip*. Protractor* and angles*. Maximum card with thematic cancel. Scott No 2023. Yvert No 2444. Centenary of technical schools.
AUSTRIA (1974) Telex machine*. Black print. Scott No 979, Yvert No 1266. 50th anniversary Radio Austria.
SENEGAL (1977) Drummer*. Telephone*. Computer circuit*. Unaddressed FDC with cachet and thematic cancel. Scott Nos 448-9, Yvert Nos 460-1.
SENEGAL (1977) Drummer*. Telephone*. Computer circuit*. Set of 2 imperforates. Scott Nos 448-9, Yvert Nos 460-1.
ST. HELENA (1990) Satellite dish*. Computer*. Telephone booth*. Fax machine*. Unaddressed FDC with cachet. Scott No 534.
