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Item#TypeModel No.ScalesModel NameMakerCountrySerial No.Case MaterialLenght Open (Closed)DateCondition
OTK011Cylindrical
K
423 / 414Otis King's Patent Calculator"Carbic, Ltd. "UKR2441Nickel-Chrome Plated Brass"10-1/4" (6")"1955
C4

Notes: "Top cap knurling is a diamond or cross-hatched pattern rather than straight knurling on prior series. This knurling is only found on calculators in the R-series. Also, cursor tube screws have been replaced with a dimple."

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