»Large Collection of Geissler Tubes«, c. 1915
22 mixed vacuum tubes, 4 of them liquid-filled, 11 of them with uranium glass parts, not all with electrical connections, length between 3 ˝ and 7 4/5 in.
Estimate: € 600/900
US$ 700/1,100
Reserve: € 280/US$ 330
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