The NGC graders saw it as 58 Brown, with a market value of a 62, and that's why they gave it the grade they did. I had a 1931-S cent that should have gotten 58 Brown but came back from PCGS as 62.
You are responding to an 8 month old thread and the OP has already posted that the coin is MS62. Nothing wrong with digging up old threads, but as a courtesy to other members, you may want to point it out. Many don't take the time to check the dates, and there is the possibility that people in that discussion are no longer active. Its always annoying to take the time to posting something educational and and helpful, only to find the OP hasn't been on this site in years (not the case here, but the GTG has already been revealed 8 months ago)