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Stamps of
Austria
,
Hermann Potocnik 100th
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
1992
, Nov 27
Hermann Potocnik 100th issue
unwmk
p.
13.75
X
10s
multi
satellite
circling the
Earth
1 to 1 of 1