1987 MEXICO LIBERTAD PROOF WITH BOX AND COA, UP FOR SALE, THIS DATE IN THIS CONDITION IA A HIGHLY PRIZED, KEY DATE 1987, THIS IS NOT THE BULLION UNC. COIN, THIS IS THE STRICTLY LIMITED, OFFICIAL PROOF STRIKING FROM THE OLDEST MINT HOUSE IN THE CONTINENT OF AMERICA AND A WORLD RENOWNED CASA DE MONEDAS […]