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Title
Optical telephone after Wien
Title
Optisches Telephon nach Wien
Language
Not applicable
Description (en)
Purchase in 1900, inventory number VII/249.
Description (de)
Anschaffung im Jahr 1900, Inventar-Nummer VII/249.
Photographer
W.  Blaschnek
Manufacturer
W. Gehmke, Berlin
Licence Selected
CC BY 4.0 International
Details about the source
Digital or other source
Details about the Source
Time Coverage
1900
Location