Stamps of Thailand, 6 Oct 1983
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postage
1983, Oct 6 International Letter Writing Week 1983 issue - corals (1983 Thailand) wmk. zigzag lines (Thailand) p. 13.25
| - | 2b | multi | Acropora asper | |||
| - | 3b | multi | Platygyra lamellina | |||
| - | 4b | multi | Fungia sp. | |||
| - | 7b | multi | Pectinia lactuca |
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