Stamps of Liberia, 14 Dec 1973
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postage
1973, Dec 14 500th Anniversary of the Birth of Nicolas Copernicus issue unwmk (no perf info) (7 stamps)
| X | 1c | multi | tracking stations | |||
| X | 4c | multi | Solar System & N Copernicus | |||
| X | 10c | multi | Aristotle Ptolemy & Copernicus | |||
| X | 15c | multi | ||||
| X | 20c | multi | Orbiting Astronomical Observatory | |||
| - | 25c | multi | ||||
| - | 55c | multi | — | — |
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