^^^^^^^^ This... If there was any value as an error you killed that when you cut the set apart. If ALL the coins are still together in the plastic it might have some extra value simply because that's not supposed to happen. I assumed those sets were packaged at the various mints though and I can't imagine how that would happen. There would be no reason for a D mint coin to be in the bin at the Philadelphia mint. Unless I'm wrong about how they get packaged when the sets are made up.Have you cut it out yet?