Brunswick Centennial sets came with a blue circle cue ball. This ball was more effective churning thru a full rack break shot in 14.1. The Red Circle played lighter and would not cut thru a centennial set break shot the same, or as effective. First time I saw the red circle ball was in the mid seventies. Black Bart/Bob Ogburn came to Colorado with one, and offered Grady a game on the wire 9 ball race to 11. Nope. It seemed it was also the first time Grady had seen that ball.