50 Pesos

The Tesorería de la Provincia de Buenos Aires issued provincial currency during the 2001–2002 convertibility crisis, when Argentina's federal banking system effectively seized up and provinces resorted to quasi-monedas — parallel currencies used to pay public employees and meet obligations the provinces could not cover in pesos or dollars. Buenos Aires Province issued the Patacón series under that emergency, and P#S2323 belongs to that lineage, though the 2006 date places it at the tail end of redemption-era replacements rather than the original crisis issuance.

By 2006, the national government had moved to absorb and retire most provincial quasi-monedas. Any notes still being issued or reissued at that point occupied an ambiguous legal and monetary space.