Williams sisters actual rackets

Release of the blade 104 sw autograph raises some questions, at least in what little is left of my mind. From 1998-2007, venus and serena have used different models of wilson rackets. Since 2007, both sisters have been using, according to wilson, the same headsize 104 sq in racket models. Discounting cosmetic change and gimmicky BS, the he specs of these models have changed little since 2007; headsize (104), length (27.25-27.5) and unstrung weight (approx 290g).
Questions:
1. is the...

Williams sisters actual rackets