Japanese dagger in Aynu style?

[kronckew]

Originally Posted by Tatyana Dianova

... I wasn't able to remove it from the hilt, although there is an opening and no Mekugi. ...

I have a friend that is quite conversant with Ainu weaponry. He's suggested that the eye of the dragon might actually be a second pinning spot, a screw rivet that is undone by holding the back of the rivet with a tool and turning the other eyeball to undo it as most Ainu swords have two holes for them as per the below photo.

He's also commented that this style sword was NOT for the tourist market as suggested, and is a definite Ainu item, but is as used and carried by the Ainu. This is a traditional ceremonial dress for an Ainu sword, and in many early photographs of the Ainu warriors dressed in traditional dress you may see these swords or knives tucked into the belt sash of the kimono, they are not the mounts of a sword that would have been used in battle which have a guard and similar fittings to the usual Japanese katana but different in that they are flatter and smaller.

more photos of a similar ainu weapon also attached.