10 Pesos

The Tesorería de la Provincia de Buenos Aires issued provincial emergency currency following the 2001–2002 convertibility collapse, when the federal government's freeze on bank withdrawals ("corralito") and the subsequent peso devaluation left provinces unable to pay salaries and suppliers. Buenos Aires province — the most populous and economically significant in the country — was among the heaviest issuers of these quasi-monedas, which circulated alongside federal currency and were formally accepted for provincial tax obligations.

Provincial bonds and scrip from this period were redeemed by the national government under a structured buyback program that ran through 2003–2004, making a 2006-dated emission from this series genuinely unusual and worth scrutinizing for issue date versus authorization date discrepancies.