10 Centavos

Banco Mauá y Ca. was the Argentine branch of Irineu Evangelista de Sousa's financial network — the Visconde de Mauá's commercial empire stretched from Rio de Janeiro through Montevideo and into Rosario at a moment when the interior Argentine provinces were chronically underserved by formal banking. The Rosario branch issued small-denomination fractional notes partly to address a persistent shortage of low-value coin in the region, a problem common to mid-nineteenth century South American commerce far from the mint at Buenos Aires.

PS#1745B2 suggests a signature or date variety within the broader Mauá Rosario series — these fractional emissions are among the rarer survivals, as low-denomination paper typically circulated hard and was discarded rather than saved.