Rodolfo Robles Valverde (1878-1939) Physician-Discoverer of American Onchocerciasis.

Rodolfo Robles Valverde (1878-1939)Médoco-Descubridor de la Oncocercosis Americana.
OwnerHerman Cudris Castañeda
ObservationsMichel:Gt 669 - Stamp Number:Gt C250 - Yvert et tellier:Gt PA278 - Stanley Gibbons:Gt 668
CountryGuatemala
Face value4 Ctvs.
Year1962
StateUsed
StatusExhibition - Non-transferable
CategoryHealth
FormatVertical
Coloramarillo.
Printerstaatscrukerei wien.
Other informationPerforated stamp Air mail
visualizations138