LAVA FOIL ARTIST EDITION. Dead & Company (Grateful Dead members w John Mayer + Others). The Sphere in Las Vegas, Nevada. Concert / Tour Poster Art Print. Printed on LAVA FOIL Paper Stock!! Hand-Signed (by Dubois) & Numbered. Limited Edition Screen Print on Thick Archival Quality Paper. Measures 18″ x 24″. Guaranteed to Arrive in 100% Mint Condition! Track Page Views With.