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Item#TypeModel No.ScalesModel NameMakerCountrySerial No.Case MaterialLenght Open (Closed)DateCondition
OTK043Cylindrical
K
423 / 414Otis King's Patent Calculator"Carbic, Ltd. "UKC1496Nickel Plated Brass"10-1/4" (6")"1932
C6

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

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