Mexico
Estados Unidos aluminum Proof Pattern 100000 Pesos 1990-Mo PR66 Cameo PCGS, Mexico City mint, KM-Pn245var (in aluminum rather than bronze). Plain edge variety. A flawless specimen expertly executed on a deeply cameo flan with just a few milk spots around 9 o'clock on the reverse.
HID02901242017
Estimate: 200-300 USD