Showa Retro Abacus 5 Balls 15 Digits Antique Wooden

It is a traditional wooden abacus used by my mother, estimated to be from 70–80 years ago, dating back to the early Showa era (around the 1940s–50s). Type: 5-bead Japanese abacus (五つ玉そろばん) Material: Wood Era: Early Showa era (approx. ).

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