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This soroban is made from high quality Japanese wood in the traditional way by a soroban craftsman and this is readily seen in the quality of construction and movement of the beads. It has 23 digits and if you are interested in further study of the soroban, we recommend this high quality one. You will notice the excellence of the touch of the wooden beads as soon as you start to use it. This soroban is presented to you with a box case of paulownia wood.