Stamps of Colombia, 14 Oct 1977
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1977, Oct 14 150th Anniversary of Cauca University issue unwmk p. 14
| - | 5p | multi |
1977, Oct 14 90th Anniversary of Society of Colombian Engineers issue p. 14x13.75
| - | 1.50p | multi |
1 to 2 of 2
| - | 5p | multi |
| - | 1.50p | multi |