Mexico 1 Peso 1950 Issuer Mexico Year 1950 Value 1 Peso (1 MXP) Currency Peso (1863-1992) Composition Billon (.300 silver) (Copper .500, Nickel .100, Zinc .100) Weight 13.33 g Diameter 32 mm Thickness 2.3 mm Shape Round Technique Milled Orientation Coin alignment ↑↓ Demonetized Yes Obverse “Estados Unidos Mexicanos” and the Mexican coat of arms: a Mexican golden eagle perched on a prickly pear cactus devouring a rattlesnake. At the base there is a holm oak (encino) branch on one side and a laurel branch on the other. Lettering: ESTADOS UNIDOS MEXICANOS