Stamps of Costa Rica, 1.80col denom
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1979, May 14 Conservation of Marine Fauna issue unwmk p. 13.5
| - | 1.80col | multi | Cynoscion phoxocephalus |
1979, Aug 31 butterflies (1979 Costa Rica)
| - | 1.80col | multi | Rothschildia sp. |
1979, Oct 8 1979 issue - Costa Rican presidents p. 10.75
| - | 1.80col | redbrn | Francisco Aguilar B. |
1981, Jan 28 Cornea Bank issue p. 13.25
| - | 1.80col | multi | eye |
1981, Jul 10 Banco Popular and the Development of the Community issue p. 10.75
| - | 1.80col | multi | farmer |
1982, May 5 Costa Rican Progress issue (no wmk info) p. 10
| - | 1.80col | multi | Rural medical care | — | — | |
| - | 1.80col | multi | Recreational areas | — | — |
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