I had forgotten about proof-like and deep proof-like, which adds another 22 grades of mint state for a grand total of 55 different mint state grades from NGC. We won't include cameo and deep cameo and ultra deep cameo or ultra deep mirror supercalifragilisticexpialidocious cameo since "techinically" that would indicate a proof striking and not a mint state coin.
You really just don't get it do you? PL and DPL (as I explained already) are most similar to the ★ in that they qualify the texture and metal flow of the surface of the coin. They have nothing to do with the technical grade. The GRADE part of the label line is only the number between 1-70 and possibly the "+". By the way, the "+" isn't used for coins graded MS70, for a grand total of 21 grades (MS60 through MS70 and MS60+ through MS69+). If you want to artificially inflate it to try to make some philosophically point, so be it. But, the facts are the facts, no matter how you care to construe them.
Take it easy there fella, no need to get aggressive and condescending if someone doesn't agree with your opinion. The fact is in the eye of the beholder. If someone is buying a slabbed coin with a star or plus and feels it's a higher grade than one without, then for all intensive purposes it is a higher grade for the one person that matters... the buyer. Call them whatever you wish, but they will likely just call you something similar for trying to tell them their MS-66 with a * or + is the same grade as one without. Eye appeal is as much a part of the grade as everything else in plenty of collector's minds.
The coin in question in the original post was graded by NGC. The FACTS of the grading at NGC are what I was presenting. I am not implying any aggression or condescension, I am simply stating facts about the "technical grade" of a coin in the eyes of NGC. Are eye appeal of a coin (★) and surface qualities of a coin (Cameo, Ultra Cameo, PL, DPL) factors for which someone is willing to pay more for a coin? Sure they are. But they are not a part of the technical grade of a coin. "Just the facts ma'am.". Sorry if you don't agree.
I see, I thought you meant it from the point of view of the consumer rather than the grading company. Guess I owe you a bit of an apology then. =)