Watch List notes:

Mexico City, Mexico, copper 4 maravedis, Charles-Joanna, "Early Series," rare. Nesmith-1 type. 5.59 grams. Heavily corroded and greenish but with enough details on the "I" side to determine the rare Early Series attribution, first we have offered (note that Nesmith cataloged only two examples). (Estimate: $350 - 500)