This is currenty on the bay as a buy it now.
http://www.ebay.com/itm/WILLIE-MOSCO...item3cc9fa36f4
It has, in red below the date and time line, "Read Masconi on Pocket Billiards."
Could this be a later addition or somthing that made it on some posters and not others? It looks like the phrase appears on the poster in the movie.