Potosi, Bolivia, cob 8 reales, 1620 T, retrograde mintmark "q", quadrants of cross transposed, Grade 2. S-P21; KM-10; Cal-930. 25.16 grams. Unevenly thick flan with good full cross and shield, the former with bottom of date visible (mentioned on certificate as just 16##) and the latter with bold q+T (retrograde P) to left, only light corrosion near edge on both sides, silvery but with dark spot at top left on obverse. With original Fisher tag and certificate 86A-191914, pedigreed to the J.P. Silberman Estate.Recovered from: Atocha, sunk in 1622 west of Key West, Florida.
