This is a 270mm (10-shaku) double-edged saw by the 7th generation Inosuke Nakaya. Inosuke-san was a disciple of Katsuji Fukazawa, a master saw smith from Niigata. 7th generation Inosuke. This is an old, hand-forged saw. We are offering one from our material storage at a special price. It's rare to find one in good condition or unused, and I believe this quality at this price will no longer be available in the market. It was originally 25,500 yen. It cuts incredibly well! The king of saw smiths is here. Due to good storage, there is little rust and the condition is good. *This saw is from a famous blacksmith and is very popular. If a craftsman uses it or if a craftsman we have a relationship with purchases it, we may remove the listing without notice. *Rust may develop while the item is listed. If you are concerned, please contact us before purchasing. We will check and report back to you. Thank you for your understanding. [Used Goods Dealer] Chiba Prefectural Public Safety Commission Permit No. 441230000407