PSA made a mistake and labeled these from 1985. You can clearly see by many of the pics that they were taken at Wrestlemania II which was on April 7th 1986.
These cards are almost impossible in Gem Mint with only 8 cards so far achieving that grade. Due to the fact that many do not sell for high prices I am sure that has kept the number of cards being submitted down so naturally that number could rise but they are indeed very tough.
I am working on putting together a little sub set within this set of just the base cards. I am not a fan at all of most of the action shots or the skits and so on and won't be submitting those.