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Item#TypeModel No.Model NameMakerCountryMaterialDiameterDateCondition
Moko Lightning Calculator???GermanyNickel-plated Brass"2-3/4"c. 1900?

Notes: "A very simple form of multiplication table with a rotating ""cursor"" carrying the multiplier up to X15, allowing products easily to be ascertained from the multiplicand, from 2 to 24 on one side and 25 to 48 on the other. "

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