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12 Volt Fleming Valve, by Royal Ediswan, London, c. 1905

Inventory Number: 77499

77499-2t 77499-1t


Date: c. 1905

Maker Details: Signed by Royal Ediswan.

Inscription: "ROYAL EDISWAN" stamped on one side of exterior surface of bulb. "FLEMING OSCILLATION VALVE / 12 VOLTS." stamped other side of exterior surface of bulb.

Size: 95 mm in overall length

Materials: Glass, brass?, assorted metals.

Other Given Number(s): Christie's 195.


Notes:

12 Volt Fleming Valve with bayonet fitting, anode connecting wire and brass? base.


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