Corrects are either correct as CMPreceived them and are essentially a new or nearly so rifle. Parts should be as sent from the supplier at the Armory or HRA. All walnut stocks and metal perfect, generally.
Collectors are correct and unmodified by CMP. The Collectors are genuinely original. Most are beyond belief with perfect metal and nearly perfect wood. They will be all walnut and with metal is like a new finish, but fromthe 1950s. These show up from time to time, but are sometimes so new that they come in their own boxes from the factory or Armory complete with powdery dessicant that was applied to prevent rust. They are higher even than regular collectors, some saying they went for $3K plus. There are even consecutively numbered pairs to be offered in their original packing. They expect $20K plus a pair of those, according to some on other boards.
The Corrects are great rifles. Get one of those and look forward to years of great shooting. I have about six at present and would have more if I could get to Anniston again. I bought an almost new M1D last trip and my wife says no more for while.