C130 - XXX Years of the Antarctic Treaty

C130 - XXX Años del Tratado Antártico
OwnerManuel Briones
ObservationsThe Antarctic Treaty entered into force on June 23, 1961 after its ratification by the twelve countries then active in Antarctic science.
CountryUnited States
Face value50
Year1991
StateUsed
StatusInterchangeable
CategoryCommemorations
FormatLandscape
ColorMulticolor
Other informationPerforated stamp Air mail
visualizations69