MEXICO. 4 Reales, 1740/30-Mo MF. Mexico City Mint. Philip V (1700-1746). PCGS Genuine--Salt Water Damage, EF Details. KM-94; Cal-1122. This piece offers hints of luster and obverse peripheral toning under the saltwater-damaged surfaces. Such a piece clearly illustrates the vagaries and dangers of ship-borne transport from the period. Historical and interesting.