Watch List notes:

Potosi, Bolivia, cob 2 reales, Philip III, assayer M, quadrants of cross transposed, Grade 1. S-P18; KM-8; Cal-628. 5.42 grams. Full shield and cross-and-tressure, clear assayer M and bold denomination ii, mostly corrosion-free except for the loss of a tangential piece of edge. With Fisher tag and photo-certificate 217271. From: Atocha, sunk in 1622 west of Key West, Florida
($750-1100)