Watch List notes:

Potosi, Bolivia, cob 8 reales, (1649) O/Z, denomination as o above o, with crowned-dot-F-dot (two dots) countermark on shield, ex-Mastalir (Plate). S-P35; KM-19b; Cal-1486. 23.37 grams. Oblong flan with edge-split, choice toning over smooth surfaces (slightly worn from corrosion), the full shield (with nearly full countermark in center) and cross particularly nice, also full assayer O/Z to left and most of denomination oo to right. Pedigreed to the Robert Mastalir Collection and plated on page 49 of Part A and page 330 of Part B of his books The Great Transition at the Potosi Mint, 1649-1652: The 1649-1652 Crowned Shield Coinage and the Countermarks of 1652 (2021), with original (generic) Herman Moro certificate.Recovered from: Capitana, sunk in 1654 off Chanduy, Ecuador.

Estimate: $300 - $450