Watch List notes:

Potosi, Bolivia, cob 4 reales, 1679/8 C/E, extremely rare. Janson-29.13.2; S-P38; KM-unl; Cal-unl. 13.38 grams. Good full cross, bold full waves (pillars flat) with full but doubled date showing as "779/8," also three assayers, of which the top-right instance on pillars side shows a trace of flat bottom of previous assayer E underneath, the still-unique "discovery coin" that led to a new listing in Janson (albeit with lot number misquoted), VF with toned fields, small edge-split. Pedigreed to Sedwick Auction 18 (lot 750).
($500-1000)