This is a Nakiri vegetable knife from Gassan Kazuhisa, a Yamagata-made blade. The moderate hammered pattern is very elegant. The steel is Aogami No. 2, and the blade is double-edged, so I think it's easy to use without any quirks. It seems that knives with a tsuba (guard) are no longer available, so this is a rare item. I've been using the gyuto (chef's knife) I bought at the same time, and the usage frequency is low, so I'm putting it up for sale.