> What I don't understand is why all the coins in PR 67 and PR 68 add up to far more than the value of the set.
> Sorry, but what am I missing here
If a respected
TPG, then that wasn't done for free, so why would you expect not to pay for it?
PF-68 would be the top proof grading by ICCS. It would represent a small premium to the common PF-67.