This is an 8-sun Ryoba saw made by Sadagoro Nakaya. A blacksmith praised as first-rate by Nagakatsu, a master of saw sharpening. The straightening is also, as expected, first-rate. Sadagoro was a disciple of the 5th generation Inosuke. The younger brother of the 2nd generation Inosuke was the famous Sadayasu Shibuki. I also use this saw on site. A hard-to-find saw. The condition is good with little rust due to good storage. [Antique Dealer] Chiba Prefectural Public Safety Commission Permit No. 441230000407 Thank you.