Central Africa

1984

Einstein and Probe Giotto

　(Central Africa, 1984, SC#660a, ensmalled 50%)

1985

Edmond Halley

(Central Africa, 1985, SC#779)

Sir Isac Newton's telescope and Comet sighting

(Central Africa, 1985, SC#780)

Halley and Newton observing Comet

(Central Africa, 1985, SC#781)

US Halley's Comet probe

(Central Africa, 1985, SC#782)

Soviet Halley's Comet probe plotting comet's pelihelion

(Central Africa, 1985, SC#783)

Isodensity photograph of comet

(Central Africa, 1985, SC#784)

Halley's Comet and probe

(Central Africa, 1985, SC#785, ensmalled 50%)

1986

Halley's Comet and E. Halley

(Central Africa, 1986, SC#C318)

European Halley's Comet probe Giotto

(Central Africa, 1986, SC#C319)

Halley's Comet and planet

(Central Africa, 1986, SC#C320)

Russian Halley's Comet probe Vega

(Central Africa, 1986, SC#C321)

Halley's Comet and Space Shuttle

(Central Africa, 1986, SC#C322)

1987

U. Keller and Probe Giotto

　(Central Africa, 1987, SC#848a, ensmalled 50%)

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