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postage
1974, May 20 World Cup 1974 issue unwmk (no perf info)
| - | 0.20b | multi | Cattleya nobilior | — | — |
1976, Dec 17 1976 issue
| - | 0.20b | brn | numeral |
1987, Feb 13 100th Anniversary of the Tenth February Society, Oruro issue
| - | 0.20b | multi |
1987, Jul 24 Endangered Animals 1987 issue
| - | 0.20b | multi | Vultur gryphus | |||
| - | 0.20b | multi | Tapirus pinchaque |
1987, Oct 2 Espamer '87 issue
| - | 0.20b | multi | ||||
| - | 0.20b | multi |
1988, Aug 15 500th Anniversary of the Discovery of America / Olympics 1992 in 1988 issue
| - | 0.20b | multi | Imperforated right | — | — | |
| - | 0.20b | multi | Imperforated left | — | — |
1989, Dec 7
| - | 0.20b | multi | Vultur gryphus | — | — |
1991, Nov 30 100th Anniversary of the First Flight of Otto Lilienthal / LILIENTHAL '91 issue
| - | 0.20b | multi | Vultur gryphus | — | — |
1992, Jul 6 History of Aviation and Space Discovery issue
| - | 0.20b | multi | — | — |
1992, Nov 18 Ecology and Conservation issue
| - | 0.20b | multi | Caiman crocodilus |
airmail
1951, Jul 1 sports (1951)
| - | 0.20b | graypur & blk |
1966, Aug 10 Marshal Santa Cruz death 100th issue
| - | 0.20b | bl | Marshal Santa Cruz |
1975, Jul 16 republic 150th a issue
| - | 0.20b | multi | arms of Beni |
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