Watch List notes:

Potosi, Bolivia, cob 4 reales, 1751 q/E, ex-Rosenheim, ex-Ugaz. S-P52; KM-39; Cal-unl (Type 55). 11.09 grams. Small, oblong, chunky flan with good full pillars and cross, parts of all three assayers with top-right q/E bold (scarce), XF with contrasting sediment in crevices, trace of corrosion near part of edge. Pedigreed to the Arturo Rosenheim and Jorge Ugaz collections.
($250-375)