Sample of Telegraph Cable for Mines, Copper wire of seven wires in a thick insulating layer made of black plastic and paper., anonymous, unknown, 1865 - 1875, copper (metal), paper, l 11 cm × d 1.05 cm
Keywords:
Sample, Telegraph Cable, Mines, Copper wire, seven wires, thick insulating layer, black plastic, paper, unknown, 1865, 1875, copper, metal, l 11
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