Gyuto knife, blade length 18.3cm, 144g. The spine is about 2.0mm thick near the top of the heel. It seems to be a brand from the past. I can only find it in the used market. Since it's from Seki, it might be an old brand of Masahiro, but I have no confirmation. It's a right-handed single-edged blade, but the material is all-steel stainless steel. It has a considerable hardness. At 144g, it's not too light or too heavy, and it feels comfortable in the hand. The handle doesn't show much wear and tear and seems like it will last for a while. I sharpened it well, put an edge on it, and polished it. Please see my profile for the detailed restoration process.