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Source:
Colnect
Issued by:
Grenada
Function:
postage
Date:
4/25
/
1989
Issue:
Halley's Comet c
Denom:
75+5c
Color:
multicolored
Design:
Experiments at sea
Watermark:
St Edwards crown & CA
Perf:
Catalog value:
Prev:
25+5c d=Halleys initial work on nebulae 1676
Next:
90+5c d=Halley observes complete lunar cycle 1720-1738
External links:
Colnect 711863..telic_Programs