Near Fine. Large 8vo. Inscribed in Sharpie on the title-page, first and last page printed in red, numerous illustrations; internally clean. Publisher s black wrappers printed in white; rear wrapper with some minor stray soiling. An inscribed copy of this work which gathers a collection of materials from the archives of the legendary artist and musician Genesis P-Orridge (born 1950) relating to a unique legal battle: Great Britain s General Post Office s 1975 case against P-Orridge for disseminating pornographic postcards through the mail. These postcards collaged imagery from hardcore pornographic magazines onto pictures of Queen Elizabeth II. When the Post Office launched their case against P-Orridge, he seized the opportunity to turn the case into another performance, disseminating further mail art (including invitations to the trial) and recruiting the support of the international mail-art community. The case was ultimately dismissed. A reprint of Ecart Publications 1976 edition, G.P.O. versus G.P-O collects ephemera, legal documents, correspondence and articles about the case and P-Orridge s mail art practice with Cosi Fanni Tutti as COUM Transmissions. Now out of print and scarce.