BOLIVIA, Potosí, cob 4 reales, Philip II, assayer B (5th period), border of xs reverse. S-P14; KM-4.3; Cal-unl (Type 160). 13.46 grams. Bold XF with widely doubled yet complete shield and cross, clear mintmark and assayer, bluish toning to the fields with some retained luster, a couple of thin scratches on the shield.