Watch List notes:

Potosi, Bolivia, cob 4 reales, Philip IV, assayer not visible (ca. 1630), mounted cross-side out in 14K gold bezel with fixed bail. 20.30 grams total. Choice full cross and shield (no peripheries due to thickness), with contrasting toning in crevices, neat shape with tall, square-sided mounting in gold.
($400-600)