http://www.sportsorama.com/ It is Bill Walton (Boston Celtics) Signed Autographed 16x20 Photo (PSA/DNA COA); this memorabilia is a big 16 x 20 photo of Bill Walton while he was with the Boston Celtics that can be hanged on walls to give the elegant NBA feel which will take you back on your favorite season. Bill Walton (Boston Celtics) Signed Autographed 16x20 Photo (PSA/DNA COA) has been personally hand signed by Bill Walton on June 19, 2010 under the direct supervision of American Icon Autographs (AIC) and comes with an individually numbered; tamper evident sticker from PSA/DNA. This photo comes with a lifetime guarantee and rest assured that you will be receiving an authentic photo of your favorite NBA star.