Thanks for all the information gentlemen, I will likely be breaking it down and doing a thorough cleaning hopefully next week sometime, and I will update then.
His description was copied from a 95 add from the internet, it just happened to match this piece loosely enough to use it.
The blade is sloppy in the saya, so I have to assume it just happened to fit at some point and that is that. Maybe it was a swap because some soldier liked the look of the 98 saya better, here a pack of smokes, let's trade kinda thing..
The casting on the tsuba has me a bit concerned. The handle side is well defined, while the blade side just looks bad. Could just be a poor cast I suppose. Just doesn't look as well defined as images I've seen.
We shall see what shakes out when it apart I suppose.
Thanks again gents! Sure is a fun hobby. I have a few other pieces I would like insight on as well, will have to start a new thread at some point.