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1951 Airmail – Panagra Airlines’ 20,000th Flight across Equator – Overprinted “20.000 Cruce Linea Ecuatorial PANAGRA 26-Julio-1951”

1950 Consular Service Stamps Overprinted “CORREOS”

1950 Airmail – Issues of 1947 Surcharged “90 ctvs. 90”

1950 San Pablo Lake

1950 Airmail – Government Buildings

1950 Literary Campaign – Overprinted “ALFABETIZACION”

1950 Overprinted “POSTAL”

1950 Literary Campaign – Overprinted “ALFABETIZACION”

1950 Airmail – Issues of 1947 Surcharged “90 ctvs. 90”

1950 Overprinted “POSTAL”