Late 20th Century Japanese Unshu Soroban 23-Digit Wooden Abacus with Original Box
This stunning, vintage 23-digit traditional Japanese abacus dates back to the late 20th century. Its frame and distinctive, diamond-shaped beads are beautifully crafted from dark birch hardwood, sliding effortlessly along smooth bamboo rods. The soroban features a classic 1:4 bead configuration - with one upper bead valued at five and four lower beads valued at one - a design that became Japan's official standard in the 1930s and a favourite among accountants, students, and professionals alike. Presenting its authentic geographical origin, the original paperboard box displays a traditional green and tan diamond-lattice pattern alongside "Unshu Soroban" calligraphy. Far from just a collector's item, this incredible piece of history remains a fully functional manual calculating tool.
The dimensions are as follows: H: 2cm - W: 7cm - L: 39.5cm
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