Here's the real deal, and this comes straight from Aramith:
The Pro Cup (measle) and red logo ball are both made with the Super Aramith Pro resin. This is their top of the line resin except perhaps for the new Tournaments that are made with the Super Aramith Pro resin with Duramith technology, whatever that is.
The blue circle (not blue dot) is also made with the Super Aramith Pro resin.
The red dot (not red circle) and blue dot (not blue circle) are both made with the lower end Aramith Premier resin.
The red circle ball is kind of Aramith's generic cue and is made with the Super Aramith resin (not the Super Aramith Pro resin).
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The Pro Cup (measle) ball, the red logo ball, and the blue circle ball are all the same cue ball. ThePro Cup comes with the Super Aramith Pro TV set, the red logo ball comes with the regular Super Aramith Pro set, and the blue circle comes with the Brunswick Centennials, which is the Brunswick branded version of the same set. Since all three sets are the same and the sets are said to be matched, it makes sense that they are all the same cue ball.
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As far as weights go, they mean nothing. All Aramith balls are "official" which means they are within specs. But because the weight spec is 5.5oz. to 6.0 oz. variances can and do occur all the time. Because the Centennial and Super Pro sets are said to be matched (for weight, size, and color) then all the balls in a new original set should be close in weight, cue ball included.
But when introducing a replacement or aftermarket cue ball to a set, it can obviously have a different weight. This is the problem with buying a measle ball, for example, to go with a set of Super Pros or Centennials. The set may be heavier or lighter than the replacement cue ball. That's why posting the weights of individual cue balls means nothing. Same thing with weighing an original cue ball to the rest of a used set because wear no comes into play.
Here is a good source of information on Dr. Dave's website. Some of the contributions in this section come from AZ members, myself included. He also has a link to the original word document that I received from Saluc and gave to him that was the source for the above info on their balls.
http://billiards.colostate.edu/threads/balls.html#cue_ball_types
thanks alot for the reply and link......:thumbup:
especially clarifying the difference among blue circle vs dot and red circle vs dot