Does NNC do crossover service?
We do not offer crossover service whereby a coin graded by another grading service is sent to us for our subjective opinion of the grade. The primary reasons for this is the possibility of damage to the coin when removed from the holder and to avoid any possibility of bias in our opinion based on the previous grade. Additionally, we cannot guarantee that your coin will be at the same grade as assigned by the other grading service since grading is based on subjective opinion. If you wish to remove the coin from the slab and submit it, then that is your prerogative.
