Watch List notes:

Potosi, Bolivia, cob 4 reales, Philip III, assayer M, quadrants of cross transposed, Grade 2, ex-Atocha, mounted cross-side out in 14K gold bezel with shackle bail. 15.41 grams total. Full but lightly corroded shield and cross, bold mintmark P. From the Atocha (1622), with Fisher tag and certificate 85A-188595.
($1000-1500)