Watch List notes:

Potosi, Bolivia, cob 1 real, 1651 E, rare, ex-Mastalir (Plate Coin). S-P36; KM-12b; Cal-746. 2.92 grams. Choice and rare piece from the wreck with nice full date and cross, partial yet bold shield, darkly toned recessed areas. Pedigreed to the Robert Mastalir collection, plated on page 254 of his 2021 book The Great Transition at the Potosi Mint 1649-1652 / The 1649-1652 Crowned Shield Coinage and the Countermarks of 1652 / Part A: The 1649-1652 Crowned Shield Coinage. From: Capitana, sunk in 1654 off Chanduy, Ecuador
($150-225)