Watch List notes:

Potosi, Bolivia, cob 8 reales, 1678 E, NGC AU 53, ex-Espinola. S-P37b; KM-26; Cal-711. 27.25 grams. Bold full cross and (slightly doubled) pillars-and-waves, two dates and assayers, three mintmarks, lightly toned, second finest in NGC census behind a single MS 61. Pedigreed to the Pablo Hernan Espinola Collection (stated on label).

Estimate: $400 - $600