I need a magnifying glass to see it, but it has the J. A. Dubow patch like the one on Brett's cool glove from "Your Most Interesting Vintage Tag" thread. There is no explanation as to why Hack Wilson has a catcher's mitt. Maybe the Dubow rep stopped by with a load of new gloves and mitts? The picture is dated 1930 and came from the book "Baseball Americana, Treasures From The Library of Congress".