Watch List notes:

Potosi, Bolivia, cob 4 reales, Philip III, assayer T, Grade 2, ex-Atocha (1622), mounted cross-side out in silver bezel with 14K gold prongs and shackle bail. 21.39 grams total. Oval piece with full but off-center shield, full but slightly doubled and partially flat cross, minimal surface corrosion. From the Atocha (1622), with Fisher tag and certificate 205173.
($800-1200)