Watch List notes:

BOLIVIA, Colonial (as Alto Perú). Carlos II. King of Spain, 1665-1700. AR 4 Reales (37mm, 13.27 g, 9h). Cob type. Potosí mint. Dated 1666 E. Coat-of-arms / Pillars of Hercules set on waves. ME 7430; KM 21. Near VF, toned, a couple of small flan splits.

From the B.H.Webb Collection. Ex Property of Princeton Economics acquired by Martin Armstrong (Classical Numismatic Group Electronic Auction 275, 7 March 2012), lot 272.