This 1959 Mexico 20 Peso Gold Coin features the iconic Aztec Calendar and is a beautiful addition to any collection. The coin is made of 0.900 fineness gold and is uncirculated. The coin is from Mexico's historical period (1905-Now) and is classified in the Coins: World category. The denomination of the coin is 20 Pesos and it is ungraded. The KM Number for this coin is 478 and it is uncertified. .4823 actual gold content. Free USPS shipping with tracking.