I acquired Wilson ProStaff Classic 6.1 (110 si) at a local store at a good price. It looks fine except there is no tension range written on it. (product descriptions instead where the tension numbers are supposed to be located.) I've used many racquets before but this is the first time that a racquet does not show its recommended tension. Anyone has the same experience? Or is something wrong with this racquet (like possibility of its being fake)? Thanks for your experiences and comments in advance.