Hello,
A local shop where I live has a WWII officers gunto, the blade seems a bit different from most of the information I have researched on them. It is 26.5", has a diamond shaped mine down by the kisakki, and a single mekugi hole with 5 characters. Natural hamon. The ha is good and sharp but the blade is black and oxidized in some places. No pitting that I can tell though. There are about four nicks on the ha big enought to put your thumbnail into. He I is asking $750 for it. That seems like a lot so I am trying to find translation to see if the blade is anything special.