»Large Motor with Geissler Tube«, c. 1910
Physical demonstration model, unmarked, brass and iron, on turned walnut base, height 11 in. (28 cm), length of the tube 8 in. (21 cm)
Estimate: € 1,600/2,000
US$ 2,200/2,700
Reserve: € 1,400/US$ 1,920
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