We found this note on the excellent Vertigo Swirl website “We have found two different posters included with this release. The more common one is 35 inch high and 24 inch wide. There is also a smaller variation which is printed on thicker paper and much darker of colour. This is 27 inch high and 18 inch high. Anyone who can explain this? There is also a considerable amount of difference in the colour of the purple lettering on the front cover, ranging from dark violet to a much lighter lilac.”