Stamps of United States - Canal Zone, 1909b issue
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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 | — | — |
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