No. He told me after he examined it. He runs this business. https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://authenticjapaneseswords.com/&ved=2ahUKEwjSg8HSy_SNAxUYF1kFHf5TEzcQFnoECBsQAQ&sqi=2&usg=AOvVaw3r6Vi-NtZy0hytZlnDaygC
I agree it's definitely not in the style of what we think of when people say Japanese Sword.
I did look up Matagi (thank you for the suggestion) but they seem to make more use of bigger blade hunting knives. If I find a way to safely remove the mekugi I will post a picture of the tang. I'm not going to try to push it out with the brass tool since the guy who examined it today said he couldn't budge it and was afraid it would cause damage to the blade.
I just had an expert exam it in person. Unfortunately the mekugi is glued. How've, he said it's about 400 to 500 years old. Some parts are missing from the scabbard (bone inlay) but he recommended it by a polishing kit. That will arrive Gilmore tomorrow.