I have a WW2 Japanese type 30 bayonet. It was made by Nagoya.
It looks great, but the blade is a blackish color (unlike others I have seen) There are no dents on it. It had a green oil like substance on the blade and it is inside the scabbered.
It is just the age that makes the metal like it is? Does the "black" color de-value it?
Many Thanks, S. Martin