Property of a California Collector
Helmholtz sound synthesizer
Kohl, Max, 1905
Details
Helmholtz sound synthesizer
Kohl, Max, 1905
Helmholtz sound synthesizer (earliest electric keyboard), 1905.
Kohl, Max, 1905
Helmholtz sound synthesizer (earliest electric keyboard), 1905.
榮譽呈獻
Annie Roddy
Sale Coordinator, Cataloguer