This vintage lockback was made for Ruko by Siezo Imai, in Seki, Japan circa 1980s. It features wood handles and has a stainless steel blade, measuring 3.25" when closed. Comes with Explorer box from same era. Seizo Imai was one Seki, Japan's finest craftsmen and most famous knifemakers of the modern era. His collaboration with Parker spanned nearly two decades. He made knives for Parker, Frost, Browning, Explorer, Compass, Condor, and many others, including his own brands Imax and Seizo Imai. His custom Loveless style knives are works of art. After his passing, several vintage old stock models were found at his warehouse. This is one of these rare finds.