Nakiri knife, blade length approximately 16.2cm, 171g. The spine is about 2.0mm thick near the top of the heel. It's engraved with "刀都 正宗作" (Sword Capital Masamune-saku), but it's a brand of Masahiro Corporation, a top manufacturer in Seki. It seems to be an older model. It's a Hon-Warikomi knife, but the sandwiched steel is not stainless steel. Be careful of rust on the blade tip. This model has a very solid feel. Because it's sturdy, there were severe marks from being hammered on the spine, so I ground them down. They're mostly gone, but a little remains. The handle doesn't show much wear and is clean. It seems like it can still be used for a while. I sharpened it well, put an edge on it, and polished it. Please see my profile for the detailed restoration process.