This Autographed William White Onl Baseball has been Personally Signed by Tommy Greene of the Philladelphia Phillies. This item is 100% Authentic to include a hologram by Beckett Authentication Services. This item may 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. The authenticity can be verified on Beckett Authentication Services website.