UP FOR SALE IS A SUM 41 CONCERT POSTER SIGNED BY ALL 5 MEMBERS IN BLACK SHARPIE. ANY IMPERFECTIONS OR GLARES ARE ONLY FROM SCAN. THIS IS AN OFFICIAL POSTER NOT A CHEAP COMPUTER PRINT OUT. ITS ALSO 1 SIDED AND MEASURES 11X17 INCHES. THERE IS A STICKER ON THE POSTER THAT GUARANTEES THE AUTHENTICITY OF THE AUTOGRAPHS THROUGH JSA AUTHENTICATION, ALSO COMES WITH MATCHING SERIAL NUMBERED CERT CARD. PLEASE MESSAGE ME WITH ANY QUESTIONS.