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Item#TypeModel No.ScalesModel NameMakerCountrySerial No.Case MaterialLenght Open (Closed)DateCondition
430 / 429Otis King's Patent Calculator"Carbic, Ltd. "UKD1003Nickel Plated Brass"10-1/4" (6")"1935

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

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