999 Plata Pura Mexican Kilo Libertad Silver Coin. The item "2011 Mexico 1Kg Ley. 999 Plata Pura Mexican Kilo Libertad Silver Coin" is in sale since Friday, September 4, 2020. This item is in the category "Coins & Paper Money\Bullion\Silver\Coins".The seller is "3olliebird" and is located in San Diego, California. This item can be shipped worldwide.