Brooks Koepka Autographed Pin Flags are top selling items among signed collectibles. This item has been personally hand-signed by Brooks Koepka and comes comes complete with a Certificate of Authenticity (COA) from JSA. The product will also be affixed with a hologram and sticker with a serial number to confirm authenticity. This Brooks Koepka 2018 U.S Open Shinnecock Hills Pin Flag - JSA Certified Authentic is backed by Sports Collectibles Online's 100% Money Back Guarantee. Order ships same day.