Camillus Jumbo Trapper on the 716 frame. Lock Back. Delrin Stag look or Staglon. Possibly made for the European Market? SFO ? Lunch Box? or Parts knife? This is the only one I have ever seen. It has 1/2 stop on the Blade and it does lock in the open position. No Pattern Number. just Camillus sheild and tang stamp. Ny USA on reverse tang No Box or papers were included with the knife.