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Item#TypeModel No.ScalesModel NameMakerCountrySerial No.Case MaterialLenght Open (Closed)DateCondition
OTK100Cylindrical
A
420 / 421Otis King's Patent Calculator"Carbic, Ltd. "UK6365Nickel Plated Brass"10-3/4" (6-1/2")"1923
C5

Notes: "Retail cash type calculator. Top cap has triangle shaped chain loop. Scale set is second version of model A scales and are black on white. Carbic Ltd. address at 51 Holborn Viaduct, London."

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