MEXICO. Cob 4 Reales, ND (1642-49)-Mo P. Mexico City Mint. Philip IV. PCGS Genuine--Graffiti, VF Details Gold Shield.13.44 gms. KM-38. Pleasantly toned and on a typical crude flan, this piece still retains solid detail on that which is fully struck up. The noted graffiti is fairly minor and exists on the unstruck areas.