I have recently come across 3 Wilson Prostaff 6.0 85's at a garage sale that I pickerd up. Two of these are the newer 85's that Sampras used. The other is in pretty good shape but it is the original version. I am not sure, but I have seen lots of threads about the Prostaff 85. The bottom of the butt cap has a sticker that says "made in St. Vincent" and the code is BSQ. I was wondering if someone could enlighten me on the difference and what one of these might be worth.