ITEM: ROBIN WILLIAMS SIGNED 11X14 PHOTO COA : This item comes with a Certificate of Authenticity from us which Guarantees that every autograph that we sell has been obtained by us or purchased from highly reputable dealers. We guarantee that all of our items will pass the top 3rd party authenticators such as P SA/DNA, JSA , or GAI. In fact we encourage you to do a PSA quick opinion on any of our items before purchasing . This way you can buy with confidence. If you any reason you have ANY authentication issues please return the item for a refund or trade.