The Offspring Supercharged AUTOGRAPHED VINYL COVER Beckett BAS Certified. All 5 Members of the Offspring have signed the vinyl cover. You'll receive the signed vinyl cover, vinyl LP, and full letter of authenticity from Beckett. Beckett Authentication Services has certified the autographs as authentic and attached their serial numbered tamper proof sticker of authenticity to the signed art card. You're able to verify the authenticity of the certification on the Beckett Authentication website.