There is a holographic sticker on the back to confirm authenticity. While this poster is officially licensed by The Doors, this is not a 1970 poster, but rather a more recent commemorative poster.The item "The Doors Luke Martin 1970 New Orleans Poster Screen Print Jim Morrison Signed #" is in sale since Friday, February 26, 2021. This item is in the category "Entertainment Memorabilia\Music Memorabilia\Rock & Pop\Artists D\Doors\Posters". The seller is "lessthanthreerecords" and is located in Hatfield, Pennsylvania. This item can be shipped to United States.