If you mean a regular straight blade knife and not a pocket knife, the case is called a sheath.
A 14K gold shell means that it is not solid gold. It is a lot like plating. Only the outside is gold.
Gold Shell. In other words gold plated.
I think it means 14kt gold shell (or gold plate). 14kg by itself means solid gold but the s stand for shell.
Stainless steel.
Most likely it is Gold shell (gold plated) But it could be a jewelers mark.
la concha = shell, case
The b in 14 KB is where the gold came from in your case it is from Mexico.
That is a Case Mini Trapper Knife. The CV stands for Chrome Vanadium. That is the non-stainless steel blade. Some prefer it to SS blades as it can be easier to sharpen.
The "KGS" stands for "Karat Gold Shell". The piece isn't solid karat gold , it rather has a type of gold plating on it instead.
Do you mean fools gold? In which case, anything that looks like gold but isn't.The proper name for fool's gold is iron pyrite.
GOLD SHELL = Equals fake or gold plate If the GS stamp is inside of a diamond shape it's the makers mark for Gottlieb & Sons.