Higo no Kami Aogami-Honwarikomi Tokudai (sizeXL)
Pic (website photo):
I only bought one, not two. These are Japanese utility knives; a simple friction folder (no backspring)that is opened with a protruding lever. The blades are hand-forged and are of san mai construction, meaning a layer of hard steel (for the cutting edge) sandwiched between two layers of softer steel (for toughness). Handle is a piece of folded brass.
This is a workman's knife, priced inexpensively so a working man can afford it. In this it is no different than the French Opinel or Douk-Douk or the German K55 "Cat" knife. It's very thin, only 1/8", about 1/2" wide and approx. 4.5" long.
Making a sheath for this one would be a bit of a conundrum, because that opening lever complicates things. You'd probably have to forego a lanyard/pigtail and sheath it with the lanyard hole toward the bottom, and pull it out of the sheath between thumb and forefinger. Or maybe work out a horizontal sheath style.