Watch List notes:

Potosi, Bolivia, cob 8 reales, 1647 Z, very rare. S-P34; KM-19a; Cal-unl. 21.00 grams. Very low weight (as made) and also very low in fineness (a perfect example of the mint scandal that was rectified in 1652), with bold P-Z, clear 47 of date, good full cross and shield, nicely toned VF. XRF results: 81% silver, 19% copper, traces of lead. Pedigreed to the Jorge Ugaz collection.
($400-600)