Watch List notes:

MEXICO: AV 4 escudos, 1857/6-Mo, KM-381.6, assayer GF, surface hairlines, About Unc. A very scarce date according to Richard A. Long in "Gold Coins of the Early Mexican Republic, 1823-1873". Likely all known examples are overdates. He noted only 10 examples offered between 1937 to 2001 in public sales.

Estimate: 600-700 USD