1967. 20” x 30”. Color offset lithograph printed in red and black ink on gold metallic foiled paper. NEAR MINT. Great condition, brilliant colors; modest wear, no rips or tears, two of the corners a little soft.

Martin Sharp's highly collectible poster for the 1967 "Legalize Cannabis – The Putting Together of The Heads" rally in London's Hyde Park, organized by Steve Abrams and others following the arrest of leading underground figure John ‘Hoppy’ Hopkins for possession of cannabis. The production of this poster led to Peter Ledeboer setting up Big O posters with ‘BO1 Cannabis by Martin Sharp Published by Big O Posters Ltd 219 Eversleigh Road’ at the bottom were sold retail at head shops or by mail order.