Featuring Research Volunteer Contributions

Permanent Series (1928-1978)

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1-cent Gorgas single

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2-cent carmine Goethals single

 

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5-cent Gaillard Cut single

 

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12-cent Gaillard single

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10-cent Hodges single

 

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15-cent Smith single

 

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20-cent dark brown Rousseau single

 

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50-cent Blackburn single

 

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3-cent Goethals single

 

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14-cent Sibert single

 

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30-cent Williamson single

 

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5-cent Stevens single

 

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1/2-cent Davis single

 

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1 1/2-cent Magoon single

 

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25-cent Wallace single

 

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2-cent Roosevelt single

 

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4-cent S.S. Ancon plate proof

 

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Caption

 

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8-cent Fort San Lorenzo plate proof

 

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13c Dredge Cascadas block of four