In the 1940’s, Gerber began making steak knives and eventually prized hunting knives in Portland, Oregon.  By the 1960’s, Gerber decided to manufacture a knife that could be used in combat during the war in Vietnam.  It was called the Mark II combat knife and was fist produced in 1966.  It featured a double edged dagger blade and a tough, textured aluminum handle for a better grip.  Some can still be found with their original leather sheath.  The handle changed to Armorhide in 1968, which is a brown colored epoxy that is very durable.  Vintage Gerber Mark II Knives are very collectible and a version of this knife continues to be produced to this day.  Check out Bob Loveless and A.G. Russell knives.