Watch List notes:

Potosi, Bolivia, cob 2 reales, 1658E, encapsulated AU 53. S-P37a; KM-16; CT-906. 6.8 grams. Exceptionally large flan with full but off-center pillars-and-waves and cross, flat peripheries with minor edge-splits, three dates, lustrous and very high grade for a cob, no toning.

Estimate: $200