This is an interesting knife for a couple of reasons. The knife is used for harvesting cabbage in Japan. It's called Cabbage Knife or Vegetable Knife. The core steel is a pure carbon steel and the outsides are clad with soft stainless steel. The thickness is 1.4mm, very thin. I could see this being used by butchers, kind of like a mini scimitar.
Included with the knife is a wooden knife sheath. Gardeners and pro cooks can attach this to their belt and have it ready to go at all times. The sheath has a magnet near the opening to keep it from rattling around and it's open at the bottom in case it is used with a wet blade (please wipe it dry before putting it away).