Only Mine - Everyone has One!!

If you believe you have a NGC coin that is under-graded, you can re-submit (in orginal holder) for an appearance review. I assume PCGS offers something similar. If the coin is other than a PCGS or NGC many will say it probably received high or overstated grade. Although I believe that ANACS and ICG have some excellent and expert graders, these labels and grades aren't as widely accepted by many collectors. In other words all grades by all grading services are not created equal.