Great post, really appreciate the details.
I have a Wilson pro staff classic 85 that seems to be this style of frame, but doesn't quite fit into the parameters set out in the table:
The butt cap code is SJN printed above the W, so based on the information I've read this would suggest it was made in Taiwan? The butt cap is white with a red W and the trademark R is to the bottom right of the W.
However it is bumperless (no head/bumper guard), which would suggest one of the earlier production models (i.e. Chicago, Belgium, All St. Vincent)?
Furthermore the End of grommet has a square shape, again suggesting Chicago, Belgium, All St. Vincent.
The undercoat primer paint is not red or grey, but a baby blue, which I have not heard mentioned before, does anyone know if this was used?
Inside the throat is there is information about the PWS and they spell "racquet" the traditional way. On the other side of the throat is written the recommended string tension of 50-60lbs.
Does anyone know if this fits into any of the comparable well known production models?
All my information is from just reading your detailed posts, I'm a rookie and by no means an expert so any information would be gratefully received.
From the premium paint color & the tension recommendation, mostly a Taiwanese.
I had a late Taiwanese, with the same premium paint color & rec tension.
About the bumperguard, Did you buy it new? It could be just replaced.
Can you post some photos?