This is a 24x36 Pink Floyd Poster Authentic Signed that has been Personally Signed & Autographed by Nick Mason & David Gilmour. This item is 100% Authentic to include a Certificate of Authenticity (COA) / hologram by PSA/DNA #Y06704.Press Pass Collectibles offers a 100% Lifetime Guarantee on all Autographed & Signed Nick Mason & David Gilmour memorabilia.