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Modern Japanese Abacus

Modern Japanese Abacus

Japanese abacus

Japanese abacus

Cardboard case for Soroban

Cardboard case for Soroban

1975-1978
Modern Japanese abacus

Modern Japanese abacus

Japanese abacus supplied by the Japanese Chamber of Commerce & Industry

Japanese abacus supplied by the Japanese Chamber of Commerce & Industry

Japanese abacus or soroban, c.1930

Japanese abacus or soroban, c.1930

circa 1930
Soroban Japanese abacus, with 15 digit. Purchased from Association of Teachers of Mathematics, 2001.

Soroban Japanese abacus, with fifteen digits

2001
Modern Japanese abacus 8 3/4" with box

Modern Japanese abacus 8 3/4" with box