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Item#TypeModel No.ScalesModel NameMakerCountrySerial No.Case MaterialLenght Open (Closed)DateCondition
OTK039Cylindrical
L
430 / 429Otis King's Patent Calculator"Carbic, Ltd. "UKM1165Nickel Plated Brass"10-1/4" (6")"1948
C6

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. No street address.

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