Here is the Heritage description (I was wrong about there being 2 I guess):
This is the only copy of this highly desirable one sheet known to exist in the world. This stone litho beauty, featuring both Cortez and Daniels, showed pinholes, as well as some tears and chipping in the image area, credits, and left border. There was a paper chip into the bottom left corner within the white field only. In addition, approximately one and three quarter inches of missing white paper in the right border and one inch in the top border have been replaced.
So the explanation I have is that the perspective in the photo is wrong - what we're seeing is the David Manners poster (Kismet?) ON TOP of the Falcon with most of the Falcon intact underneath...