Watch List notes:

BOLIVIA, Potosí, cob 4 reales, 1679 C, NGC XF details / sea salvaged (Shipwreck Blue Label). S-P38; KM-25; Cal-523. 6.82 grams. Bold pillars with clear date and assayer, two mintmarks, the cross also bold with second date and third mintmark, thin from corrosion and with edge-crack, nicely toned. With original HRC tag and photo-certificate 5159 ("Isla del Muerto Treasure"). Recovered from: Consolación, sunk in 1681 off Santa Clara Island, Ecuador

Estimate: $200 - $300