If you are interested in a price reduction, please indicate your desired amount. I will do my best to accommodate your request. Takeyoshi Wakatsuki (Art Name: Takeyoshi) - Certified as one of the Unshu Shichinin-shu (Seven Masters of Unshu) in 1946. There's an episode where Mr. Eitai's abacus, which was damaged in a flood, was sent for repair. When it was deemed irreparable, Takeyoshi's work, which had "won first place in a competition," was sent as a replacement. This suggests that he was held in high regard, almost equal to Mr. Eitai. After all, only seven people were certified as Unshu Shichinin-shu... I myself have been using a 19-digit abacus with rock boxwood beads for over 60 years, which I received from my teacher around 1962. The Unshu Shichinin-shu were the seven master craftsmen of abacus making at the time, and they were permitted to sell their works as special-grade products. Nowadays, there are hardly any people who own unused works by these masters. On the BS Japan program "Gokujo Otakara Salon" (Host: Koji Ishizaka) broadcast on June 9, 2022, a 19-digit abacus with rock boxwood beads was showcased as the starting point for collecting. It was auctioned online for 928,000 yen. I purchased it about 45 years ago for 25,000 yen. Please also take a look at the ranking chart. Thank you for viewing.