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Item#TypeModel No.ScalesModel NameMakerCountrySerial No.Case MaterialLenght Open (Closed)DateCondition
OTK054Cylindrical
K
423 / 414Otis King's Patent Calculator"Carbic, Ltd. "UKA6600Nickel Plated Brass"10-3/4" (6-1/2")"1926
C5

Notes: "Top cap has triangle shaped chain loop. 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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