20 Décimos

Banco Nacional was one of the earliest formal banking institutions established in Latin America, and a 20 Décimos note from 1826 places this squarely in the foundational years of post-independence monetary experimentation across the region. The décimo as a unit reflects the decimal currency reforms that followed the break from Spanish colonial coinage systems, though adoption was uneven and public resistance to paper instruments was considerable.

PS# prefixes in the Pick catalog designate private or state bank issues predating central banking authority — this note falls into that transitional legal gray zone where issuing banks held quasi-governmental status but without formal sovereign backing.