1987 Mexico 1 Onza Libertad. 999 Fine Silver – BU/UNC – Natural Toning. Up for sale is a beautiful 1987 Mexican Silver Libertad containing 1 Troy Ounce of. 999 fine silver, struck by the historic Casa de Moneda de México, the oldest mint in the Americas. This classic early-date Libertad features the iconic Winged Victory (Angel of Independence) on the obverse with the volcanoes Popocatépetl and Iztaccíhuatl in the background, and the Mexican national coat of arms on the reverse. Weight: 31.1 grams (1 Troy Ounce). Mint: Casa de Moneda de México. This coin is in Brilliant Uncirculated (BU/UNC) condition with natural toning that developed from storage at the end of a roll. Luster is still present, and the toning adds character that many collectors appreciate. Please review all photos carefully, as they are part of the description. The coin shown is the exact coin you will receive. There may be minor contact marks or light surface marks consistent with bullion coins stored in rolls. No cleaning has been done. This is a great addition for:? Libertad collectors? Silver bullion investors? Toned coin enthusiasts.