I would agree that PCGS slabs on average sell for more than any other grading service.
In my experience PCGS seems very arbitrary about detecting problems on coins, sometimes rejecting the same coin in two submission attempts for two different reasons. However, you can find coins in no-problem PCGS slabs that appear obviously cleaned with lots of hairlines. Maybe NGC is a bit more consistent in this area.
I've heard NGC "likes" toned coins more than PCGS, giving them higher grades and being less likely to flag coins as "artificially toned".
Any such theories are based on experience from coin submissions and even if true at one time may no longer be true due to turnover in grading personnel at the services and/or changing standards. If you want to form your own opinions try selecting pairs of similar coins and split them between the services and see how it goes. It would make an interesting experiment to write up for CCF!
In my experience PCGS seems very arbitrary about detecting problems on coins, sometimes rejecting the same coin in two submission attempts for two different reasons. However, you can find coins in no-problem PCGS slabs that appear obviously cleaned with lots of hairlines. Maybe NGC is a bit more consistent in this area.
I've heard NGC "likes" toned coins more than PCGS, giving them higher grades and being less likely to flag coins as "artificially toned".
Any such theories are based on experience from coin submissions and even if true at one time may no longer be true due to turnover in grading personnel at the services and/or changing standards. If you want to form your own opinions try selecting pairs of similar coins and split them between the services and see how it goes. It would make an interesting experiment to write up for CCF!



















