Pedro Gruenholz

Discovery of electromagnetic waves

Descubrimiento de las ondas electromagnéticas
OwnerPedro Gruenholz
CountryGermany
Face value80 pfennig
Measures4,3x2,5 cms
Year1983
StateUsed
StatusExhibition - Non-transferable
CategoryScience
FormatLandscape
Other informationPerforated stamp
visualizations326