Watch List notes:

Potosi, Bolivia, cob 8 reales, (1650) O, with crowned-L (Mastalir Lac) countermark on cross, Mastalir Plate. S-P35; KM-19b; Cal-1488. 26.59 grams. Full shield (slightly doubled) with bold P-O to left and 8-O to right, bold full cross (also slightly doubled) with full countermark, date at top not visible but matched by Mastalir to issues with modern 5 and dots between digits with four-dot ornaments to left and right, minimal corrosion, darkly toned in crevices. Pedigreed to the Roberto Mastalir Collection of Countermarked Potosi Cobs, Plate Coin (page 112 in Part B) in his book The Great Transition at the Potosi Mint, 1649-1653, The 1649-1652 Crowned Shield Coinage and the Countermarks of 1652 (2021), with copy of Herman Moro certificate. From: Capitana, sunk in 1654 off Chanduy, Ecuador
($300-450)