Original silkscreened poster advertising performances by The Crazy World of Arthur Brown and Soft Machine (June 16th) and the Liverpool Love Festival (June 23rd) at UFO. London: Osiris Visions (OA 104), 1967. Printed in purple, yellow and gold. 75.6x49.8cm. Hapshash's psychedelic design features a central image of a nude woman and a large butterfly, its thorax depicted as an ejaculating penis (hence the title). Upper right edge roughly cut for 31cm. (this would be hidden if framed with a window mount); verso partially discoloured from age and the screenprinting process; o/w a Near Fine copy.