Watch List notes:

Potosi, silver, cob 8 Reales. Phillip III, Potosi mint (mint mark P), assayer Q (Augustin de la Quadra). 21.1 gr. (clipped, as the greatest part of cobs of this time - indeed this was one of the reasons that led Philip V to end this kind of coinage). Mint and engraver mark worn out. Calicó 151. Fine.