Spanish silver cob "piece of eight" eight Reales minted in Potosi, Bolivia circa 1580 during the reign of Philip II.
Obverse: cross with lions and castles.
Reverse: Spanish coat of arms. Assayer initial “A”.
Custom set into a 14k yellow gold bezel pendant, measuring approximately 1 and 7/8 inches from the top of the bail to the bottom of the bezel, 1 and 5/8 inches across widest point.