The Dr. John "Celebrating Mac & His Music" poster is signed and numbered by the artist (Brad Vetter). It is 12 1/2 x 22 1/4 and printed on heavy poster weight paper. There was a limited run of just 500 posters ever created.This poster was only available for sale the night of the event in New Orleans. We have a limited number remaining, once these are gone they will never be sold again, anywhere. These are only available on the blackbirdpresents.com shop.