1945 Mexican 2 1/2 Pesos Hidalgo Gold Coin Year: 1945 Grade: Any Denomination: 2 y Medio Pesos (2 1/2 pesos) Metal Content: 0.0603 troy oz Purity: .900 Gold Manufacturer: Banco de Mexico Thickness: 0.86 mm Diameter: 15.5 mm These are circulated coins so they come at any grade condition, but usually AU (almost uncirculated), These 2 1/2 Peso Gold coins are among the first to honor Mexican national hero Miguel Hidalgo y Costilla. 2 1/2 Peso coins offer an efficient way to diversify holdings of Gold bullion.