The study of monetary phenomena in Argentina between 1810 and 1850 is complicated by the lack of historical sources and the coexistence of various currencies. According to previous research, the north of the country and specially Tucumán have been strongly influenced by Bolivian monetary policy and its currency devaluation throught the issue of coins Know as «feble». However, so far, a quantitative analysis of the circulation of money in this region for this period does not exist. This article shows that probate inventories have a great potential for advancing the exploration of these issues and presents an analysis of all the inventories available for Tucumán between 1820 and 1850. With this information the demand for money for this period is estimated and we confirm that money in circulation would have become more abundant in the 1840s, the period of highest levels of issue of «feble» coins, but without an obvious break with previous decades.
