Hello people

Im not a fan but my girlfriend is a huge fan and the other day i went with her to see them play at the Annandale hotel. After they played they were signing shirts and my girl brought a thirsty merc shirt and got it signed and LEFT IT ON THE TABLE, because she was so excited! She was very bummed about losing it and im on a mission to find a shirt and get it signed some how but i have no idea where to start!!!

PLZ HELP!!!

alex