Usagi Yojimbo DojoBoard

Does anyone know where I can get this outside of the hardcover? I saw Sensei mention that sometimes there are extras that are printed, and was wondering if anyone knew of where to find these. I know FuryStorm has the original art. I just think this is a beautiful piece, and would love to get it to display on my wall, rather than be contained on the inside of the book.

Any help is appreciated. Thanks!