20 Pesos

These provincial notes were issued by Buenos Aires Province during Argentina's terminal convertibility crisis, when the federal government's decade-long peso-dollar peg was collapsing and provincial administrations across the country began printing their own quasi-currencies to meet payroll and social obligations. Buenos Aires Province called theirs "Patacones" — a name borrowed from an old colonial silver coin, which carried obvious political weight. Ciccone Calcográfica, the established Buenos Aires-province security printer, handled production at Don Torcuato throughout the series.

The Patacón was technically a bond, redeemable for pesos and accepted for provincial taxes. That dual status kept it afloat longer than most of the rival provincial scrips issued in 2001–2002, several of which collapsed within months.