I have owned for quite some time what would seem to be a okashi do. Sorry no photos as of now.
I do not know a whole lot about Japanese armor, but I restore and reproduce European armor using 100% historical tools and techniques. Add that to what I do know about Japaneses armor and I'm stumped.
The Dou, both back and fount only cover the upper part of the chest. It had silk lacing when I got it but it was so worn and lost to time It was not holding the kusazuri plates together much at all. But some of it was left and I could tell that the kusazuri cover the belly area and not the upper legs.
The iron was hand forged and show signs of it, it has hand hammered rivets and the lacquer has a base layer under it made of what looks like a clay stone, rice husk mix. A lot of the lacquer is broken off and I been in the middle or resting it the Dou.
I may be wrong but soulhn't the kusazuri cover the upper legs and shouldn't he dou cover the hole torso? Maybe it was just a low grade okashi do? or a fake made by someone like me ? Or I'm just looking at the Dou wrong it was make for a rather sort person like someone 4.10-5ft tall?