Río Negro Dam - Power Dam on the Río Negro.

Presa de Río Negro - Represa de Energía en el Río Negro.
OwnerHerman Cudris Castañeda
ObservationsMi:UY 572, Sn:UY C85, Yt:UY PA84, - A print run of 300,000 stamps.
CountryUruguay
Face value62 Cents.
Year1938
StateUsed
StatusExhibition - Non-transferable
CategoryScience
FormatLandscape
Colorverde
PrinterImprenta Nacional
Other informationPerforated stamp Air mail
visualizations281