Watch List notes:

MEXICO. Mint Error -- Off-Metal Strike on Silver -- 20 Pesos, 2019-Mo. Mexico City Mint. PCGS MS-67 Gold Shield.
KM-Unlisted (for regular issue). Weight: 16.7 gms. Dodecagonal shaped. Quite elegant and brilliant, this RARE error presents a fully silver planchet rather than the intended bimetallic issue of a nickel-silver center within an aluminum-bronze ring.

Estimate: $100.00- $200.00