Watch List notes:

Potosi, Bolivia, bust 4 escudos, Charles IV, 1791PR, laureate bust (very rare), encapsulated NGC AU 58, finest and only known in NGC census. CT-241; KM-76. Superb strike and lustrous fields, exceptionally detailed (per the very rare one-year design) with just the highest points slightly flat (not really wear). With a mintage of only 170 pieces (both laureate and non-laureate types) this date is the rarest bust-type issue in any denomination from this mint. This specimen is clearly a trophy gem and has no equal in any sales records known to us. NGC certification #4431905-001. ($15000-30000)