Watch List notes:

Mexico City, Mexico, pillar 2 reales, Charles III, 1760M, A over inverted A in king's name (very rare), NGC AU 55, ex-Potomac.Cal-641 (unl var); KM-87 (unl var).Per Yonaka #M2-60c (rated R3), with A in king's name punched over a partially erased upside-down A (very clear on this coin), with lovely rich toning all over, deeply impressed edge, minimal wear and no marks but without much luster, still arguably AU 58 or better (top at NGC being MS 61).Pedigreed to the Potomac collection (Sedwick Auction 25, with original lot-tag 1178).
($500-1000)