GRATEFUL DEAD BAND signed autographed album COA HologramGrateful Dead band signed vinyl album titled from the Mars hotel complete with matching numbered Hologram and a fine quality cloth paper COA document. All of our Certificates of Authenticity ( COA ) state the location and date of where the autograph signature was obtained. We are the only dealer as far as we know that provides this information with every item! In the hobby of memorabilia, this is very important.