Watch List notes:

Bogota, Colombia, cob 4 reales, 1651, assayer RMS, rare, PCGS AU detail / saltwater damage, ex-Eldorado. Restrepo-unl (cf. M38.1); S-B7; KM-unl (10.1 for Type). 11.60 grams. Near-pristine full shield and rightmost pillar with full date to right, attractively toned, with light corrosion only near part of edge, one of the best we have seen of this type from any source, also a different assayer-mark from what is listed in Restrepo (PoR) for this first date of type. Pedigreed to the Eldorado collection (Stack's Bowers auction of January 2018, lot #11055). Maravillas, sunk in 1656 off Grand Bahama Island

Estimate: $1250-2000