|Size||Fine Metal Content||Diameter||Weight||Fineness|
|.4823 troy ounces||27.43mm||41.666gm||.900 or 21.6kt|
The gold pesos are struck by the oldest mint in North America, the Mexico City Mint. The 20 pesos were minted from 1917-21 and again in 1959 and from 1960-1971. The obverse shows the Mexican Coat of Arms, depicting an eagle perched on a cactus with a serpent in its beak. The reverse displays the ancient Aztec sun calendar, Cuauhxicalli.