^Lot 1474 Potosi, Bolivia, cob 2 reales, (1649) O/Z, undotted O, early castles, rare, ex-Mastalir (Plate Coin)

Potosi, Bolivia, cob 2 reales, (1649) O/Z, undotted O, early castles, rare, ex-Mastalir (Plate Coin). S-P35; KM-14b; Cal-unl. 3.54 grams. Fine with off-center shield though clear bottom of Z showing under the O assayer, nice and nearly complete cross, spotty dark toning, thin natural edge-crack. 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).