8 Soles heavy type

Bolivia's 1859 coinage came during a period of chronic political instability — the country had cycled through more than a dozen heads of state in the three decades since independence. The "heavy type" designation distinguishes this issue from the reduced-weight 8 Soles pieces introduced shortly after, a change driven by silver market pressures and ongoing attempts to align Bolivian coinage with regional trade weight standards.

The Potosí mint, operating since 1574, struck this piece — one of the longest continuously operating mints in the Western Hemisphere at that point.