I had 4 early teen Lincolns that I cracked out of NNC slabs and submitted to PCGS. Of the 4 , I think two went up a point one stayed the same and one went up a point but went from Red to Red-Brown. The coin looks very good but PCGS won't give you a ms-67 in my humble opinion just because they are PCGS. It just seems that PCGS will keep the numbers low. I had two very interesting conversations last week at the FUN Show in Orlando FL. Both dealers had tables full of graded Lincolns and claim they submit Lincolns very often (like hundreds and hundreds a year). Both told me what most think about PCGS seems to be true. This will be for a later thread. This is only referring to Lincolns.
Lincolns, I can't speak about other denominations