These Centenials I have a chance to buy are $30. Still on the fence because not only because of the yellowing but now u guys got me thinking they could be all different shapes and sizes and I wouldn't have a clue.
BTW, The balls I have are not Wal-Mart junk... that's laughable. They are WAAAAAAAY better. Got 'em at Sears. lol. Sportcraft FTW!
I would not pass up a good ball set for 30 yellowed or not. Its easy to tell but you need a mic or dial calipers. Std is 2.250, just measure the balls. If there within .005 that's a pretty good set. Measure each ball both directions. Its very common for sets in pool rooms to be .025 - .030 worn & out of round. That's one reason why its a struggle to get a tight rack.
Rod