Potosi, Bolivia, cob 4 reales, Philip III, assayer not visible, 10

Potosi, Bolivia, cob 4 reales, Philip III, assayer not visible, 10 points (Grade 3), hand-signed Fisher certificate from 1976.KM-9; Cal-Type 149.7.02 grams.Thin from heavy corrosion, yet with clear shield and cross and denomination o-iiii, encrustation in crevices (not fully cleaned), desirable pre-"Mother Lode" find.With original hand-signed Fisher certificate #2737 from 1976 (Cape Coral Bank). From: Atocha, sunk in 1622 west of Key West, Florida
($350-500)