Mexico
Ferdinand VI Real 1757/6 Mo-M MS61 NGC, Mexico City mint, KM76.1. Lightly toned Uncirculated with considerable subjacent luster on pleasant surfaces, though a tad flatly struck in the obverse's centers. A bold and uncommon overdate in any grade, currently the single example listed in NGC's population report rare and desirable in this technical designation.
Estimate: 400-500 USD