Original 1st printing 20 x 30&1/4" event poster for an "OZ Magazine"-sponsored cannabis-legalization rally, held in Hyde Park (Speaker's Corner) in London, England on 7/16/1967 (*this was the first large-scale legalization event held in Europe).

 Art by Mike McInnerney, extra-thin vellum (smooth front/rough reverse) "fly-posting" style stock poster is in excellent (B+) condition; there are pin/tack holes in each of the four corners, a pair of hairline-thin diagonal bends in the upper left/right corners, a hint of edge creasing, light surface wear (a few ultra-thin hairline bends)and a touch of handling wear, otherwise fine.

 Absolutely STUNNING psychedelic image on this piece! Check out a brief clip of the event, featuring none other than ubiquitous beat poet Allen Ginsberg (with Steve Abrams):

https://www.youtube.com/watch?v=AxOfFJfiMng