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'Marconi' Tuning Fork Type BS10, by Marconi Company, London, 20th Century
Inventory Number: 69685
Date: 20th Century
Maker Details: Signed by Marconi's Wireless Telegraph Co. Ltd.
Inscription: "'MARCONI' TUNING FORK / INST. No 382376 P.S. No / TYPE ____ MARCONI'S WIRELESS TELEGRAPH CO LTD LONDON" printed on brass plaque upon upper surface of base.
Size: 300 x 160 x 150 mm (maximum extremities)
Materials: Brass, copper, nickel, steel, iron.
Other Given Number(s): Christie's 225.
Notes:
'Marconi' Tuning Fork Type BS10, with two brass-plated copper electro-magnets with adjustable brass and nickel-plated armatures flanking the arms of the sliding magnet, on japanned brass base. With four nickel-plated terminals upon long side of base marked "A1", "A2", "B1", "B2" respectively. Previously catalogued with other, similar 'Marconi' Tuning Fork (Inv. Num. 87284).
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