Does PCGS offer a Registry calculator?
It would be interesting if it was possible to run a date/mm/grade in a registry calculator that would then provide information as to a set standing. For example, I had a couple of difficult coins to a set, this calculator would let me know my new position would be. Might come in handy before outlaying the cash on a coin. Of course, I suppose you could simply "add" the insert number into your set and then remove it but I don't like that idea really.