Unshudo Soroban Solomatic with Case, USM-65, Rosewood Beads

Thank you for looking.
Unshuhdo Soroban (Abacus) Solomatic 23-digit with case, USM-65, Chestnut colored beads.
A wooden abacus designed for efficient calculation.
Purchased on Amazon, used by my child a few times in class, but has not been used since.
It is in perfect working condition.
The abacus itself has no noticeable scratches or dirt, but there are faint sticker marks if you look closely.
Please consider the case as a bonus.
↓Amazon page
https://amzn.asia/d/06rEdViL

- Model Name: Soro-Matic
- Brand: Unshuhdo
- Material: Wood
- Features: Abacus for calculation