Stamps of Costa Rica, 0.60col denom
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airmail
1975, Oct 24 30th Anniversary of United Nations issue unwmk p. 12.25
| - | 0.60col | multi |
1977, Mar 31 50th Anniversary of Rotary Club, San Jose issue p. 16
| - | 0.60col | multi |
1979, May 14 Conservation of Marine Fauna issue p. 13.5
| - | 0.60col | multi | Penaeus vannamei |
1979, Aug 31 butterflies (1979 Costa Rica)
| - | 0.60col | multi | Danaus plexippus |
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