Stamps of St. Thomas & Prince Islands, 50c denom
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postage
1979, Jun 8 butterflies 1979 issue - butterflies (1979 St. Thomas & Prince Islands) unwmk p. 14.75
| - | 50c | multi | Acraea newtoni |
1979, Dec 21 Sailing Ships 1979 issue - sailing ships (1979 St. Thomas & Prince Islands) p. 15
| - | 50c | multi |
1979, Dec 28 fishes (1979 St. Thomas & Prince Islands) (no perf info)
| X | 50c | Cypselurus lineatus | — | — |
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