Official unknown (Big O Posters Ltd. 1967) printing 19&3/8 x 29" art/merchandise poster, "Blowin' in the Mind" (or "Mister Tambourine Man"), featuring a psychedelically-enhanced portrait of the one and only Bob Dylan by legendary Australian artist Martin Sharp (image was originally commissioned in 1967 for UK underground magazine, "OZ" (issue #7).

 Thick foil-coated glossy stock poster is in decent/used (B/B- to B-) condition; this example has a small tape pull in the top left corner, a fairly extensive amount of "worming" (small squiggly foil anomalies resulting from exposure to moisture) covering the entire bottom part of the image, a few stray edge nicks, a number of extra-tiny surface rub marks hiding within the image area and a bit of moisture damage on there reverse, otherwise fine. 

 An unquestioned MASTERPIECE of 1960's psychedelic art, the Victoria and Albert Museum in London has one of these posters in their permanent design collection.