Dunno What Ya Mean.........Anniversary?
I never heard of Brunswick Anniversary pool balls.........did a Google search........nada.......tried an Ask Bing search......zilch..........went to Brunswick's website........zero.
Dunno what you mean by Brunswick Anniversary Pool Balls?
Are you referring to Aramith's Brunswick Centennial Pool Balls? The look is very distinct, elegant and classic........pretty unmistakable and when you see them, the resin color of the balls is very deep and dark colored.......no pale colors........and the inverted arrow points that left & right flank the circled number.......well, the look is pretty unique.
As far as I'm concerned, Raschig may have made better ivory balls but when it comes to resin pool balls, The Brunswick Centennial Edition sets the height of the bar for playability, durability, and quality consistency. Every single ball is within >.005 difference measured with a calipers on a scale of 2.25" and of the sixteen balls, only three had that tolerance. All the other balls were uniformly 2.25". In weight, every single ball....all sixteen......weighed 168 grams.
I mean you really can't do much better than that and just in case, the Aramith measles 3 dot cue ball, which doesn't come with the Centennial set, is also 2.25" and weighs 169 grams.....1 gram heavier than the Centennial Blue Dot Cue Ball in the set, as well as all the numbered pool balls.
Now all of this may be completely off target from what you asked about but I couldn't locate any information about Brunswick Anniversary Pool Balls. And in my 50 years of pool playing, I've neither read nor heard that term used before in reference to Brunswick pool balls.