Series 1: Four-piece Italian Botticino Marble Display Coasters. These heavy marble slabs have high-def Iconic 9/11 Museum images printed on them for a one-of-a-kind display piece. Series 1 features 'The World Trade Center Cross' - 'FDNY Honor Guard' - 'Oscar Prays at Sunrise' and 'Sunset at Ground Zero.' Each tile measures 4 in. x 4 in. Each tile has natural imperfections that come with real Italian marble. For a limited time, the corked bottom of each set has one coaster hand-autographed by the Official Photographer at Ground Zero. Presented in a beautiful gift box.