1979/9 RPD Mexico - 1 oz Una Onza Troy de Plata Pura .925 Silver Round - U1126 | eBay
Mexican Una Onza Troy De Plata Pura Coin .925 Silver 1 oz 1980 | eBay
1979 - 1980 Mexican Una Onza Troy De Plata Pura Coin .925 Silver 1oz Casa De Moneda 2x coins one of each date - Professional Dealers of Coins, Bank Notes and Bullion.