MEXICO. Cob 4 Reales, ND (1598-1606)-Mo F. Mexico City Mint. Philip III. PCGS VF-30. KM-37.1; Cal-745. Weight: 13.66 gms. This handsome cob 4 Reales comes from the period immediately preceding the addition of dates on Mexican coinage. This example showcases a well-centered strike on both sides, offering a clear mintmark, assayer, and denomination astride a complete Habsburg shield on one side and a full cross with castles on the other. The surfaces are clean and shimmery throughout and blanketed by a stately charcoal tone.