I am keen to know the facts on the date of this poster and learn more about dating Italian posters. It will be very interesting to learn if the date given on the poster is not as it seems. I will need convincing evidence rather than general thoughts so I'm not yet swayed from the poster evidence and EMP yet! Though I must say the paper quality and printing quality seem quite good, so I am open to it being of a later printing.
(Edit... ok, thank you very much Tang & ddilts, I'll investigate the logos)
Jeff, when I take photos of my posters, I take around 10 or 15 including all the little bits of text around the edges, artist signatures, distribution company logos reverse side etc. So I have the photos you have requested (below). Also the 2 panels look there is a slight discolouration of the lower panel, though I didn't see it when looking at it and might have been exaggerated by the flash.