Thank you for your input. Like I said, I know nothing about it so I'm interested in finding out all I can. With that said, and my memory is quite hazy as I received this from him 25 years ago, I remember him telling me that he got it from a Japanese officer whilst stationed in Osaka, and he mentioned that I shouldn't take the tassel off or untie the knot because it is valuable. It had been on my grandfather's wall from as far back as I could remember, even as a kid. I always oogled it when I was there which is why he gifted it to me.