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postage
1989, May 2 50th Anniversary of Ruminahui State issue wmk. emblem & INSTITUTO GEOGRAPHICO MILITAR (no perf info)
| - | 70s | multi |
1989, May 10 10th Anniversary of the Death of Benjamin Carrion Mora issue
| - | 70s | multi | Landscape near Loja |
1989, Jun 2 2nd Art Biennale, Cuenca issue
| - | 70s | multi | "Paraguay III" - Carlos Colombino |
1991, Sep 16 100th Anniversary of the Birth of Dr. Pablo Arturo Suarez issue unwmk
| - | 70s | multi |
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