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Home > Auction >  Science&Technology/MechanicalMusic/Fairground >  Lot.0340 Demonstration Model of an Early Carbon Grain
  • Demonstration Model of an Early Carbon Grain

LOT 0340 Demonstration Model of an Early Carbon Grain

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EUR240
Estimate  EUR  500 ～ 700

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Science&Technology/MechanicalMusic/Fairground

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Demonstration Model of an Early Carbon Grain Microphone, c. 1900 With series resistor and switch, wood base stamped with no. 188937. Demonstrationsmodell eines frühen Kohlen-körner-Mikrophons, um 1900 Mit Vorwiderstand und Schalter, Holzsockel geprägt mit Nr. 188937. Start Price: EUR 240

Science&Technology/MechanicalMusic/Fairground
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Koeln, NRW, DE

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  • Commission  EUR
  • 0 ~ Unlimitation23.8%

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