Hi, gentlemen I was just browsing some web sites and found this racquet on a Japanese web site. I can't understand Japanese so I used a translator. It says that this racquet was very populart among top players 20 years ago. And this is a Wilson 90th anniversary edition. ($450 including the special case) I'm not 100% sure but it seems like they say Prostaff 6.0 made in St. Vincent is a stock version of this racquet. (if this makes sense) They say 2 ncode-look alikes are the Ultra 2 frames with ncode cosmetics for playtest.