CHICAGO – Potter & Potter‘s May 15 Vintage Posters, Prints & Works on Paper event was the image of success from start to finish, busting through the sale’s preauction high estimate to realize more than $405,000. After a day of spirited bidding, 56 lots realized $1,000-$2,000; 13 lots made $2,001-$9,999; and two lots broke the $10,000 mark. (Lots linked to images reflect hammer prices.)