1987 Mexico Silver Medal 5 Onza Oz Dos Mundos Grande Proof 40 Reales OGP + Box. Very nice 1987 Mexico. 999 5 Onza Silver Proof Casa De Moneda 40 Reales Coin. Edge lettering and its accompanying certification in the original Casa de Moneda Box. Please note there is some cosmetic damage on the box (see […]