Watch List notes:

Mexico City, Mexico, cob 8 reales, 1669G, very rare. 27.59 grams. We can trace only two reports of this very rare date, one without photo in Calbeto (via Pradeau) and one with questionable date in a 1982 Christensen auction. The 166 on this specimen is clear (bottom two-thirds of each digit visible) but the final 9 is crude and not 100% certain. The assayer G is clear, however (which is very scarce anyway), and the shield and cross are all in evidence (albeit typically weak). Fine overall.

Estimate: $250 - 375