Watch List notes:

BOLIVIA, Potosí, cob 1/2 real, (1652), transitional McLean Type IIc, NGC / sea salvaged. S-P37; KM-unl; Cal-unl. 0.83 gram. Variety with motto as (PL-VS)-VL / T-R-A on pillars side, with parts of the pillars bold but the rest of the coin (including the whole cross) featureless from corrosion, still recognizable as a rare denomination and type as from a wreck, also nicely toned. With original ROBCAR tag and photo-certificate M20204. Recovered from: Consolación, sunk in 1681 off Santa Clara Island, Ecuador

Estimate: $150 - $225