I have had a WWII NCO sword for many years, but as I go to try to dig up it's history I'm running into some oddities with it. As long as I've had it, I don't think it's a fake, as the quality is on par with another more easily traced NCO sword I have and it's aging seems natural. The Hamon is very light and flat, the tip lack the hard lines, and the Fuchi is brass rather than copper with only 2 marks instead of three. the serial number (which does match the saya) is only 5 digits and lacks a mark with it. I cannot get the brass screw in the aluminum tsuka to loosen as it is too stripped to get any leverage as well as corrosion to inspect the tang, which of course just makes it all the more difficult to track down. The oddities of this one just have me stumped. I would greatly appreciate any information on this sword as possible. I have no intention of ever selling it. I just want to know it's history. Thanks!!