Bolivia, Philip IV, 8-Reales, (1)651, Potosi, assayer O, 24.5 g., similar to preceding but · P · O · 8 O · vertically and stamped with type A countermark on obverse (Cal. 1034 var; CN. 1; CT. 427 var.), double struck on obverse but king's name and date partially clear, some staining on reverse but very fine, countermark good very fine and rare