I am as new as it gets when it comes to my knowledge of these military swords. I work for a pawn shop and I purchased this sword. I was told it was a Naval Kai Gunto. I believe its a Chounsai Emura. It does have a wide kissaki which, if what I read is correct, was a style that Emura used.  the Tsuba and its parts all have matching serial numbers "499"  Any info I can get would be much appreciated. This stuff is so fascinating. Here is a link to the gallery if needed. https://imgur.com