So when you send a coin to say NGC and they cross it from a PCGS holder, does NGC let PCGS know that they have cracked it? I'm sure the answer is no, but I'm just curious if this also plays any type of role in the reports.
I'm thinking they don't share information on that either...sort of don't ask ...don't tell! But if you think about it should you wear white after Labor day?
No. NGC has a program where they pay a trivial credit to your account (25c IIRC) for each label returned so they can update their database. Not sure about PCGS.
I don't think they share this info. This mystified me for a while, but I think the reason is they don't want the other side to pick and choose certain crossovers for advertising purposes. They may have an unwritten "understanding" that this is a competitive advertising war that neither will start. Minimizing the amount of crossover info available to the other side or to the public minimizes the chances of that info being used against them in advertising. It is possible with some low mintage issues where individual coins can be recognized (patterns are good examples) to do research on past auctions to uncover crossovers. On rare occasions, an auction catalog description will mention that a coin in a PCGS holder was formerly in a NGC holder and vice versa. Cal
