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Item#TypeModel No.ScalesModel NameMakerCountrySerial No.Case MaterialLenght Open (Closed)DateCondition
423 / 414Otis King's Patent Calculator"Carbic, Ltd. "UKB1057Nickel Plated Brass"10-3/8" (6-1/8""1928

Notes: "Top cap has vent nipple with Made in England. Black painted cursor tube. Scale set is second version of model K scales and are white on black. Carbic Ltd. address at 51 Holborn Viaduct, London."

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