Watch List notes:

Lot of seven Potosi, Bolivia, cob 2R (one) and 1R (six), dated 1650-52 (where visible), assayers O and E, ex-Mastalir (Plate Coins). 20.78 grams total. Generally rare types with much visible detail in spite of minor corrosion. Pedigreed to the Robert Mastalir collection, plated on pages 247, 252, 253, 255 and 258 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
($350-500)