Shield Type
Mexico City, Mexico, cob 4 reales, (1)638/7(P), very rare, ex-Concepcion (1641), ex-Rudman.S-M19; KM-unl (38 for type); Cal-unl.11.62 grams.Very bold 38 of date with fairly clear 8/7 (first we have seen in this denomination), full cross but partial shield due to peripheral flatness, light corrosion (thin on part of edge), Fine details, lightly toned.From the Concepcion (1641) and pedigreed to the Isaac Rudman numismatic cabinet.
Estimate: 200-300 USD