According to historiography, deflation was one of the main features of early 19th century Spanish economy. However, studies that quantify the intensity of this deflation in relation to the experiences in other countries are lacking. For this reason, the purpose of the paper is the construction and the interpretation of a Laspeyres index of consumer prices in Barcelona for the years 1775–1844. The paper is divided into two sections. The first part describes the method used to construct the index. The second section compares the evolution of Spanish prices with other international cases.
