10 Pesos

The Banco y Casa de Moneda was Buenos Aires province's own institution, established to serve what was, between 1852 and 1862, a breakaway state that had refused to join the Argentine Confederation after Urquiza's victory at Caseros. Buenos Aires operated as a separate republic during these years, with its own currency, tariff revenues from the port, and banking infrastructure entirely independent of the national government forming in Paraná.

The PS prefix in the Pick reference signals a state-chartered rather than nationally authorized issuer — appropriate here, since no national authority existed that Buenos Aires recognized at the time of issue.