http://bioproj.sabr.org/bioproj.cfm?...=2924&bid=1731
According to this article Coveleskie opened a cafe in 1930 but got into trouble for serving alcohol during Prohibition. He opened his tavern, the Giant Killer, some time later so this card would have to be from the 30's or later. That makes sense to me because Harry looks a little old and his son appears all grown up.