Watch List notes:

Potosi, Bolivia, cob 8 reales, 1717 Y, Calbeto Plate. S-P43a; KM-31; Cal-1553. 27.23 grams. Chunky and crude but with clear date and assayer among technically full pillars, most of cross, Fine with patchy toning and some porosity, desirable pedigree. Plate Coin 1150 on page 326 of Gabriel Calbeto's Compendio de las Piezas de Ocho Reales (1970), pedigreed to the Ponterio auction of June 1994, with original lot-tag 173.

Estimate: $250 - $375