This is a vintage unmarked prototype pocket knife made in Seki, Japan by Athro/Houwa circa 1990s. It is identical to the others we have marked Athro. It measures 3 5/8" long closed and features hardwood handles with scrolled bolsters and 440 stainless steel blade. The blade has a tight lockup and good snap. This knife is unused with light handling wear, found in a knife warehouse in Seki. A high quality knife and scarce.