I hate asking for help, but here I go, lol. I know absolutely nothing about Japanese militaria, and a friend asked for some help, which I'm unable to do. His uncle, who is still alive actually, has recently given him several items which included a Japanese flag and sword. Here is the flag. It is not one of the norm, I think, and I've personally have never seen on. He and myself would be very grateful for any help. Images to follow...
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