Description:
BOLIVIA, Potosí, cob 8 reales, (1649) Z, with crowned-C and crown-alone countermarks on cross (very rare with two countermarks), ex-Ponte, Mastalir Plate.
S-P34; KM-19a; Cal-1485. 12.77 grams. Badly cracked and corroded but the two countermarks clear and nearly complete, decent full shield with bold Z in doubled area to left, mostly toned.
From the Capitana (1654), pedigreed to the Luis R. Ponte Collection, Plate Coin on page 32 of Mastalir's The Great Transition at the Potosí Mint 1649-1652: The 1649-1652 Crowned Shield Coinage and the Countermarks of 1652, Part A: The 1649-1652 Crowned Shield Coinage (2021) and on page 70 of Part B: The Countermarks of 1652.
Code: 052404191051