Mexico City, Mexico, 4 reales, Charles-Joanna, "Early Series," assayer P to right, mintmark M to left (oMo-oPo), encapsulated NGC VF details / environmental damage. Nesmith-26 for type; S-M4; CT-75. Bold full details except for parts of legend, with attractive deep toning all over, old circular mark below PLVS but no corrosion like the slab might indicate. ($600-900)