Watch List notes:

Potosi, Bolivia, cob 4 reales, 1732YA, extremely rare (currently unique). S-P45; Janson-unl; KM-unl; CT-unl. 13.22 grams. Full and well-centered pillars-and-waves and cross-lions-castles, evenly-worn AVF, two dates, three assayers, small edge-splits, traces of blue and orange toning. This is a very important 4R, as it is the ONLY date and assayer (not counting overdates) that we have NEVER seen in our 25-year study of Potosi pillars-and-waves cobs. Several specimens are known of the overdate 1733/2, but not clean 1732YA, which is missing in all published collections and every private collection known to us. Only one of the top Potosi cob collectors today can own this piece, so we are excited to see where the bidding goes! (Also note the 8R 1732YA in this auction, lot #972.) ($2500-5000)