This is a vintage folding knife made in Japan (most likely by Seizo Imai) for Frost Cutlery. This is a Davy Crockett razor trapper folding knife. Seizo Imai was one Seki, Japan's finest craftsmen and most famous knife makers 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.