This is an original Olsen OK 150 pocket knife made in Seki, Japan between circa 1978-1982. In the late 1970s, Olsen teamed up with Seizo Imai to produce models in Japan at lower cost. It features a sharp stainless steel blade and classy brass handle with smooth bone inlays. It is marked "Olsen Ok 150 - H.C., MI" (Howard City) on the front and on the back is "Stainless Steel Japan". This is a great smaller sized pocket knife and has appealing lines to it. Highly collectible, yet usable. Acquired direct from the closed factory of Seizo Imai and in storage for four decades, this is a rare chance to own unused old stock from a bygone era.