Watch List notes:

Mexico City, Mexico, cob 4 reales (?), Philip III, assayer not visible, fragment. 6.23 grams. Thin and heavily corroded, the shield and cross still in evidence (possibly an 8R), darkly toned. With generic Fisher certificate dated September 15, 1988. Recovered from: Atocha, sunk in 1622 west of Key West, Florida
($100-150)