Lot 20 — COUNTER SOROBAN, Unknown, Uchida Yoko Co Ltd, Japanese calculator, mathematics, instructions
Contact seller
Uchida Yoko Co., Ltd., Countex Soroban: Small and Handy, But a Remarkably Efficient Japanese Calculator, Unknown place and year.
Intact with minor cover wear, depicting Japanese abacus use methods. Interior clean with slight binding creases.