The 1922 Eastern Exhibit Supply issue generally feature postcard backs.  Produced by a Philadelphia company, the cards are often mistaken for traditional Exhibits, and in some cases, the Philadelphia company name has been blacked out from the reverse and replaced with the Chicago Exhibit company name.  

Strong, midgrade example of Kenneth Williams' card, with some very light surface staining at the left.  "Made in U.S." has been rubber-stamped on the card reverse, adding a degree of collectability for collectors of variations.