This is a Japanese Shikishi board, approximately 9 1/2 x 10 3/4, that has been hand signed by Akinobu Hiranaka. It has been certified authentic by PSA/DNA and comes with their sticker and matching certificate of authenticity.
This product comes fully certified with a Certificate of Authenticity and tamper-evident hologram and is fully backed by Supersportscenter.com's Authenticity Guarantee.