Watch List notes:

Potosi, Bolivia, cob 1 real, (1649) O/Z, dotted O, very rare, ex-Mastalir (Plate). S-P35; KM-12b; Cal-unl. 3.33 grams. Clear over-assayer O/Z, VF overall with most of shield showing plus nice full cross, partial digits visible in date. Pedigreed to the Robert Mastalir Collection and plated on page 245 of Part A of his book The Great Transition at the Potosi Mint, 1649-1652: The 1649-1652 Crowned Shield Coinage and the Countermarks of 1652 (2021).

Estimate: $125 - $200