Unshu Soroban Kyodo Kumiai (Unshu Soroban Cooperative) Wooden Soroban (Abacus) - 23 Digits With stop rubber With magnetic case One-touch reset type This is a one-touch soroban that allows you to reliably clear the beads with a single button press. Purchased at a soroban classroom. Used once a week for less than six months, it has minor scuffs and scratches, but is in beautiful condition. There are no noticeable scratches, stains, or warping, and the beads and one-touch button move smoothly. The case has no major damage such as breakage, but there are some minor scuffs and stains that do not interfere with use. No name written. Although it is in beautiful condition, please understand that this is a used soroban that has been used by a child. One-touch soroban, mental calculation, soroban, abacus SORO-MATIC solo matic USK Unshudo Tomoe Soroban