This aggregated auction listing is being sold by HiBid in Sacramento, California. BidProwl's Flip Score puts it at 70/100, which scores around the median for general surplus.
Description from HiBid
1733 SPANISH 8 REALES "PILLAR DOLLAR" COIN
ALSO KNOWN AS PIECE OF 8 COIN FROM A SUNKEN SHIP MOUNTED IN A 14qt GOLD BEZEL PENDANT SETTING