Stamps of Monaco, 25th Anniversary of UNESCO issue
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postage
1971, Sep 6 25th Anniversary of UNESCO issue unwmk (no perf info)
| - | 0.30fr | multi | Art - Organ hands Michelangelo | .20 | .20 | |
| - | 0.50fr | blk & orgbrn | Research - Alchemist missile radar | |||
| - | 0.80fr | yelgrn & brn | Culture - Scholar book TV | |||
| - | 1.30fr | Prince Pierre de Monaco |
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