Also, Bonanza balls are "blems" from Columbia300/Track/AMF300.
Usually the ball is the same performance ball as the ball it looks the most similar too (in the case of color blems), so if it looks like an Overdrive, most likely it is. I say "usually," because you can't be 100% sure - Columbia doesn't provide any information.
If you are buying from BeansProShop, and he has them labeled as a certain ball, then you can be pretty sure that is the ball you are getting.
Also, I believe he will provide you with drilling instructions if you get one with the extreme specs (long pin, etc).