Aloarjr810, it was a hand out paper given to me by another bowler, it read " Three part ball(High Center of Gravity); Polished, Low Porosity Cover; Finger Weight; No Side Weight; Use this ball for dry lane condition where you still want some hook potential, but not a lot".
I'm pretty much with lefty50.
Things like "Three part ball", "Low Porosity", "Finger Weight; No Side Weight that's come from something old like from some old bowling magazine/book.
As for the High & Low Center of Gravity Ball, I wouldn't hazard a guess. I doubt it has anything to do with RG.
Now if they said "Core heavy" or "Cover heavy" ball, Now that is a old way of referring to RG (Core Heavy=Low RG, Cover Heavy=High RG).
as for the "washed ball vs unwashed ball." I would guess wiping/cleaning the ball.
This puts me in mind of the articles you find on allexperts.com, most all are outdated junk.
They are copied from old bowling magazines/books/flyers and you'll see weird terminology used. Which is because it's been translated from another language.
It would be interesting to see a scan of the handout to see what all it said.
Here's a example from the late 80's of a old chart that used the terms "Three part ball", "Porosity", "Finger Weight" "No Side Weight"