"I'll trade you almost every knife in my collection. Kidding, I used to collect and train with swords. I've been training in Japanese martial arts for 40 years. That is a short, Daito, or long Wakizashi.Do not clean the sword till you get it appraised. The handle and Suba and other hardware are not important. Rarely, you will find an old , family Suba on a WW2 era sword. These swords are hard to come by now and worth a lot more than the used to. It looks like a mass produced sword, except they wern't really that short.It looks Japanese Naval to me by looking at the Saya, and if you know what happened to most of their ships you will then realize not many Naval swords survived. Get it checked out, it might be worth your while. Or send it to me. ;^)