Bolivia
Philip III Atocha-Recovered 8 Reales 1618, Potosi mint, assayer not visible, 25.4 grams, sea salvaged with the original COA from Mel Fisher. Partial date visible which must be 1618 as the second "1" is not clear. Dated coins are tougher to get from this wreck, and deserve a premium.
Estimate: 350-450 USD