100 Pesos

Entre Ríos was one of several Argentine provinces that issued quasi-currency during the 2001–2002 convertibility crisis, when the federal government's freeze on bank withdrawals — the infamous "corralito" — collapsed public trust in the peso and left provincial administrations scrambling to pay salaries and keep local commerce moving. These provincial bonds, broadly called "patacones" in Buenos Aires or carrying their own regional names elsewhere, circulated as de facto banknotes despite having no legal tender status outside the issuing province.

The PS# designation without a catalog number reflects how poorly documented much of this emergency emission remains — many issues were printed in small or irregular runs and never formally catalogued before being redeemed or discarded after stabilization in 2003.