MEXICO. Duo of 50 Centavos (2 Pieces), 1870 & 1887. San Luis Potosi Mint. Both PCGS Gold Shield Certified.Both pieces: KM-407.7.<p>1) 1870-Pi O. PCGS AU-55.<p>2) 1887-Pi R. PCGS AU-58.<p>Each of these delightful examples presents amber-gray toning and just a light degree of gentle handling.