Stamps of Colombia, 20 Mar 1920
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airmail
1920, Mar 20 1920 air b issue unwmk (no perf info)
| - | 0.10p | grn | Flier in Plane Watching Biplane | — | — | |
| - | 0.10p | grn | Watching the sea from the biplane | — | — | |
| - | 0.10p | grn | Looking at the mountains from the biplane | — | — |
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