This Autographed Limited Edition Artist Proof #4/25 & Framed 22x30.5 Lithograph has been Personally Signed by Bob Kane of Batman. This item is 100% Authentic to include a Certificate of Authenticity (COA) / hologram by Beckett Authentication Services. The authenticity can be verified on Beckett Authentication Services website. This item has been professionally framed to overall dimensions of approximately 28.5 x 38.5 inches.