2179 - Heinrich Georg Barkhausen (DDR)

2179 - Heinrich Georg Barkhausen (DDR)
OwnerManuel Briones
ObservationsHeinrich Georg Barkhausen (1881-1956), was a German physicist.
CountryGermany
Face value10
Year1981
StateUsed
StatusInterchangeable
CategoryVIP
FormatLandscape
ColorAzul y Negro
Other informationPerforated stamp
visualizations110