MEXICO. Late Series. 4 Reales, ND (ca. 1542-55). Assayer A (M A). Carlos and Johanna (1516-56). NGC MS-61.13.55 gms. KM-18; Nesmith-58; Cal-Type 58#79. Well struck, with only minor doubling, and placed on a large round planchet with nearly complete legends. Veiled in deep graphite tone, yet no evidence of granularity from saltwater exposure appears. Far superior to the majority of survivors and a great type coin for that reason.NGC MS-61.