This Autographed 16x20 Photo with the inscription of "Have a Coke and a Smile (Greene); Thanks Mean Joe! (Okon)" has been Personally Signed by Joe Greene & Tommy Okon. This item is 100% Authentic to include a hologram by Beckett Authentication Services. This item will come with the new Beckett Authentication hologram that has a scannable QR code rather than the traditional COA. If you would like to have a COA; you are welcome to reach out to Beckett for a printed certification once you receive your item. This is a BAS Witnessed Protection Program item which means a Beckett Authentication Service representative was present when this item was being signed. We conducted an autograph signing with Joe Greene & Tommy Okon where multiples of the same item were signed. While the photographs are representative of this item; the size; placement and strength of the signature may vary. Each item is hand signed; therefore; each autograph is unique. This item can be verified through BAS Witnessed. This item also contains a certificate of authenticity from Denver Autographs.