This 12x12 insert was hand signed by KK Downing and sold on his website. Proof photo and/or other information available upon request. This item has been certified authentic by JSA (James Spence Authentication). It comes with a COA card. You can verify the JSA serial number on their site. Spenceloa.com. That number is, VV30849. Payment must be received within three days of purchase unless otherwise specified. Thank you!