I think they just changed to Sticky Fingers, after the Poster was made. There isnt really a Sticky Fingers clue in the posters is there?
Yes there is. Sue pointed it out first. Look at the Sticky Fingers album cover,
and look at how "American Jubilee" is worded on the poster.
You;re guess is as good as mine, but the font looks very different to me - were talking how American Jubilee and Sticky Fingers are spelled?