North Sea Jazz Festival 1988 Gerry Mulligan Original The Hague, The Netherlands Concert Poster. North Sea Jazz Festival. July 8th, 9th, 10th, 1988. EX-/VG Edge wear in areas and a corner creases on the bottom right. 32 5/8 x 46 3/8. Fold lines – see photo. At visiblevibrations, we only sell ORIGINAL Concert Posters, Art Prints, Music Memorabilia and Limited Edition Art Toys!