1605, Bolivia, Philip III of Spain. Large Colonial Silver 8 Reales Cob Coin. R! Mint Place: Potosi (P) Mint Year: 1596-1605 Mint Place: Potosi (Bolivia) Reference: CT-121, KM-10. R! Assayer: Hernando Ballesteros (B) Denomination: Cob of 8 Reales (Piece of Eight) Weight: 26.53gmDiameter: 37mm Material: Silver Obverse: Coat of Arms of the spanish line of the House Habsburg. Mint- and ...