Watch List notes:

Potosi, Bolivia, cob 8 reales, 1641(?)FR, rare. S-P28; KM-19a. 27.18 grams. Full 4 of date but last digit unclear (could be 3), full cross and shield, full FR (rare in itself), rather worn (VG+) and with dark and green spots (probably debased silver).
(200 - 300 USD)