JIKEXINGMENG Abacus, 17-Digits, Vintage, Professional 17 Column Soroban Calculator, Brown and Black, for Arithmetic Mathematic Education

Chinese Vintage 17-Digits Abacus Children's Math Calculation Tool Professional 17 Column Soroban Calculator for Arithmetic Mathematic Education

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

Yellow Mountain Imports Digit Standard Abacus 10.5 Inches - Professional 17 Column Soroban Calculator (Functional and Educational Learning Tool)