Watch List notes:

Large study collection of 27 Potosi, Bolivia, cob 1/2R, Philip IV, no assayer, legends showing either PLVS VLTRA or nonsense lettering, some with dot below monogram. 39.92 grams total. To our knowledge this is the finest and most extensive collection of these mysterious issues, presumably struck in the 1630s and 1640s, with atypical legends and no assayers nor mintmarks, some with dot below monogram, even one with the monogram upside-down (relative to the crown), yet all with the same style of monogram (and only minor variation in castles and lions). Many of these are confused for Colombia as well. Overall the coins grade F-VF and most are toned, with generally full monograms and crosses, seven holed. Several pedigreed to the Paul Karon collection (Ponterio auction of March 1990). SEE INTERNET FOR PHOTO. (Estimate: $1250 - 2000)