This is a 13x18 that has been hand signed by Michael Phelps. This item has been certified authentic by James Spence Authentication (JSA) and comes with their tamper-proof sticker that can be verified on https://www.spenceloa.com/verify-authenticity.This is a stock item. We have several of these and you will receive one that is of equal qualityWe pride ourselves on selling 100% certified authentic autographed memorabilia. We have a full time retail store in the Jefferson Valley Mall in Yorktown Heights, NY.Located at:BG Autographs650 Lee BlvdYor