At the Houston Gun Collectors Show recently I picked up a Bowie styled ,Large knife.It is 30-1/2 in O.A.L., 21in. blade, 2-1/2 in.wide, 3 brass rivets hold the handle slabs to the full tang.The only markings I can find on the blade appear to be: ...G C C O Japan...Can anyone shed any light on this maker and knife??