Stamps of United States - Canal Zone, CANAL//ZONE(up) overprint
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postage
1909 1909b issue ovpted on stamps of Panama unwmk p. 12
| - | 1c | dkgrn & blk | ovpt, Vasco Núñez de Balboa | |||
| - | 2c | red & blk | ovpt, Fernandez de Cordoba | — | — | |
| - | 5c | bl & blk | ovpt, Justo Arosemena | — | — | |
| - | 10c | vio & blk | ovpt, Obaldia | — | — |
1914 ovpted on stamp of Panama (no wmk info) (no perf info)
| - | 10c | gray | on 10c-gray-unissued (0) |
1915 1915 issue ovpted on stamps of Panama unwmk p. 12
| - | 1c | dkgrn & blk | ovpt, map of canal | |||
| - | 2c | car & blk | ovpt, Balboa taking possession | |||
| - | 5c | bl & blk | ovpt, Gatun Locks | |||
| X | 10c | org & blk | ovpt, Culebra Cut |
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