5 Centavos

The Banco Entre-Riano was a provincial bank operating out of Entre Ríos, one of the Argentine Confederation's more politically turbulent provinces — still living in the shadow of Justo José de Urquiza, who had dominated the region since the 1840s. Provincial banks in Argentina during the 1860s frequently issued fractional notes to address chronic small-change shortages that federal coinage could never adequately supply.

At 5 centavos, this is about as low a denomination as provincial paper money gets. Fractional notes of this type rarely survived even light use — the paper was thin, the denominations too small to bother preserving, and redemption incentives were weak.