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Stamps of
Australia
,
Halley's Comet
issue
List
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Catalog
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Gallery
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All issuers
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1 to 1 of 1
postage
1986
, Apr 9
Halley's Comet issue
unwmk
p.
14x13.25
X
33c
multi
radio telescope
Orbit of the comet
1 to 1 of 1