I plan on submitting a Mexican 2 Reales coin from the 19th century that has an overdate, but I noticed a discrepancy in the NGC charts. The variety plus site does not note any varieties for the 2 reales from that era, yet on the census there are a number of coins with overdate designations. How would I go about getting the overdate attribution? Is it considered a type so I do not have to specify variety attribution and pay the fee or do I need to specify variety attribution even though the version is not in the variety plus section? I should note, this specific overdate has been given once before as per the NGC census.