A poster announcing an Oz obscenity trial fundraiser concert at the Polytechnic of Central London (near the GPO Tower) on July 3rd, 1971. Designed by Richard Adams. Printed in black on white stock, featuring an illustration by Alan Grimwood of a Commedia dell'arte or carnivalesque pantaloon. 56.8x43.6cm. The concert line-up included Traffic and Alexis Korner (part of Traffic's performance was included on their album, 'Welcome To The Canteen', released two months later). Near Fine.