Interrupted milled

Obverse

In the center field, the national shield with the inscription "ESTADOS UNIDOS MEXICANOS" (UNITED MEXICAN STATES) along the top of the coin.

Reverse

At the center of the coin, the figure of Lieutenant José Antonio de Medina Miranda. On the left side, the schooner “Iguala”, and, below, the vessel “Patrulla Oceánica de Largo Alcance” (Long-range Ocean Patrol). On the right side, the micro text “TTE NAV ANTONIO DE MEDINA MIRANDA” (NAVAL LIEUTENANT ANTONIO DE MEDINA MIRANDA), and, to the left, the latent image of an anchor. In the upper outline, the legend "BICENTENARIO DE LA MARINA-ARMADA DE MÉXICO" (BICENTENNIAL OF THE MEXICAN NAVY). On the exergue, the denomination "$20" and the years "1821" and "2021", and, to the right, the mint of Mexico’s Mint "M°".

Composition

1. Center of the coin: copper-nickel-zinc alloy.

• Content: 65% (sixty five percent) copper; 10% (ten percent) nickel; and 25% (twenty-five percent) zinc.
• Weight: 5.51 grams.

2. Peripheral ring of the coin: bronze-aluminum alloy.

• Content: 92% (ninety two percent) copper; 6% (six percent) aluminum; and 2% (two percent) nickel.
• Weight: 7.16 grams.