Watch List notes:

Mexico City, Mexico, bust 4 reales, Charles IV transitional (bust of Charles III, ordinal IIII), 1790FM, unique and unlisted overdate variety with 9 punched over different 9. KM-99 (for non-overdate); CT-840. 13.34 grams. Clear straight-tail 9 over curved-tail 9 in date (first we have heard of), lightly toned AVF with lots of old scratches in obverse fields.

Estimate: $125-200