Watch List notes:

Potosi, Bolivia, cob 8 reales, 1623 with date rendered as "16ZIII" (rare), assayer not visible, ex-Concepcion (1641), ex-Rudman. KM-10. 23.89 grams. Bold full "ZIII" for date, much of king's name, the shield and cross technically full but somewhat weak, Fine details with light surface corrosion, deeply toned all over. From the Concepcion (1641), and pedigreed to the Isaac Rudman collection.
($250-375)