Photo 1 of Vaupan Digit Standard Abacus Soroban Professional 17 Column (10.2 inch) Math Abacus, Math Calculating Tool with Reset Button for Adults Kids (Brown)

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Photo 1 of Vaupan Digit Standard Abacus Soroban Professional 17 Column (10.2 inch) Math Abacus, Math Calculating Tool with Reset Button for Adults Kids (Brown)Photo 2 of Vaupan Digit Standard Abacus Soroban Professional 17 Column (10.2 inch) Math Abacus, Math Calculating Tool with Reset Button for Adults Kids (Brown)