On Tue, 29 Nov 2016, Ian Finder wrote:
  I believe the "Woz" edition was actually
produced in greater quantities
 than the normal one.
 Either way, even if it were a real signature- Woz is known to have low
 enough standards with a sharpie that his autograph may in fact devalue
 an item!
 - Ian 
In which case, it was appropriate that Cindy warned you of the defacing
before you drove to Dallas.