The Buck 500 Duke Stag Folding Knife is a vintage pocketknife with a 2.76 - 4in. plain stainless steel blade and a lockback mechanism. It features a stag/antler handle and is ambidextrous. The knife comes with a sheath and box and was manufactured in the United States in 1992. This rare Buck 500ST model is a collectible folding knife that is highly sought after by knife enthusiasts.