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postage
1991, Apr 18 butterflies (1991 Colombia) unwmk p. 14
| - | 190p | multi | Heliconius longarenus ernestus | airmail |
1991, Sep 20 Architecture issue p. 12
| - | 190p | multi |
1992, Apr 2 200th Anniversary of the Birth of Francisco de Paula Santander issue p. 14
| - | 190p | multi |
airmail
1991, May 31 Whale issue
| - | 190p | multi | Inia geoffrensis and sotalia fluviatilis |
1991, Oct 11 America 1991 issue
| - | 190p | multi |
1991, Dec 2 5th Group of Rio Presidential Summit issue
| - | 190p | multi |
1992, Apr 13 Copyright Protection issue p. 12
| - | 190p | multi |
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