Anverso: Escudo de armas (crowned escutsheon,
with quartred shield (1 & 4 , lion, 2 & 3 castle) con
hart shield (Bourbon dinasty) between 2 crowned pillars
of Hercules with wrapped by ribbon with motto PLVS VLTRA
Leyenda: (título) •HISPAN•ET IND•REX•
(left, value between mint marks)
(PTS monogram, Potosi Mint) 1•R•(J•R•/•P•R•)
JR (1767-1776, Jose de Bargas Flores)
PR (1776-1802, Pedro de Mazondo)
Reverso: Bust 13th king Charles III (derecha, 1759-1788)
Leyenda: DEI•GRATIA•1773 - 1785•CAROLUS•III•
Canto: C - chained
