Shuzo's creation, boxwood, 23 digits, one-touch abacus. It seems that those who are not satisfied with birch beads consider boxwood beads. Shuzo's standard models were quite good, but the one-touch boxwood beads seemed very easy to flick. Originally, one-touch boxwood abacuses cost over 10,000 yen, even for inexpensive ones. This famous abacus might be a good deal, considering it's only been used a little. Thank you for viewing.