MEXICO. Cob Real, ND (1554-56)-Mo O. Mexico City Mint. Carlos & Johanna. PCGS VF-25.KM-9; Cal-74; Nesmith-108. "Late Series". Weight: 3.16 gms. Slightly off-center, but in such a way that large portions of the outer legend display bold legibility. Dusty gray tone and great metal quality give the coin some added visual appeal.