The cobb does not have the normal top cross on the t. The only cobb I could find that looked close in this way is here
http://www.mlive.com/sports/grand-ra...natures_o.html
What you said about if someone was going to forge a cobb why wouldn't it look more like his standard signature... Since the piece is period to ca. 1916 and most wouldn't know what a cobb sig would look like, much less be in the business of reselling one, I would still say that if not authentic, the cobb and other sigs we're put on in the clubhouse not to deceive collectors but to satisfy someone who wanted the sigs and probably never found out they weren't real. Still a cool piece.