Stamps of Colombia, 7 Mar 1961
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postage
1960, May 28 8th Pan-American Highway Congress issue unwmk p. 11
| - | 10c | bl & grn | ||||
| - | 20c | multi | Pan American Highway through Colombia |
airmail
1960, May 28 8th Pan-American Highway Congress issue
| - | 10c | vio & grn | ||||
| - | 20c | red & bl | ||||
| - | 30c | blk & grn |
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