100 Pesos

The Casa de Moneda de Buenos Aires was not strictly a mint in 1848 — it had been functioning as a paper money issuer and proto-central bank since the 1820s, managing the province's currency largely independent of any national framework, which would not exist until 1853. The Junta de la Administración was the governing body overseeing that institution during the Rosas period, and notes issued under this authority circulated in a Buenos Aires that was politically isolated from the interior provinces and maintaining its own fiscal system under intense external pressure.

Locally printed rather than contracted to a European house, which was the more common arrangement for South American issues of this period.