I've just wobbled up a ladder and sorted through a tsunami of posters to find this.... it's the Stuart Sutcliffe poster that I got from his exhibition at the Barbizon Gallery in Glasgow as part of Mayfest in 1990.
What an image. It shows Stuart in a conscientiously bohemian pose, in a decadently silver-lined studio with ornately rococco table groaning with alcohol. It's a scene that's funkier and artier than Andy Warhol's Factory, and says 'Look at me - I'm light years away from my working class roots - I escaped!'.
Hope you like it!