Watch List notes:

Mexico City, Mexico, copper 4 maravedis, Charles-Joanna, "Late Series," no assayer (G), M to left on obverse, king's name as CHAROLVS, NGC XF 40 BN, finest known in NGC census. Nesmith-1; Cal-28; S-M5; KM-3.1. Dark in color as usual but rather atypically smooth and corrosion-free, with choice, bold and full details, the best of just four of the type with numeric grades at NGC.
($500-1000)