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D
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E
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F
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H
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I
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J
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K
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L
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M
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O
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P
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Q
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R
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T
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U
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V
- Vanuatu
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W
- Wallis and Futuna Islands
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Y
- Yemen Arab Republic
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- Yemen
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Z
- Zaire
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24 April 1988

an unidentified satellite

an unidentified satellite

an unidentified satellite

Sputnik 1

an unidentified satellite

an unidentified satellite

an unidentified satellite

an unidentified communications satellite (souvenir sheet of 1 stamp)

Scott #s 868-75