The analysis of the written sources and finds will be used to propose a preliminary overview of the circulation of the coinage of Lucca north of the Tuscan-Emilian Apennines. Traditionally the territory of Emilia-Romagna has been regarded as an area of overlap of two different "monetary areas" which emerged in the eleventh century when mints began to strike coins with different types. Presumably, economic and political dynamics were involved. It seems that a decisive role in the circulation of this currency was played by the Canossa family which dominated a large territory between Tuscany, Emilia-Romagna and Lombardy. An initial analysis of the data shows that different monetary areas influenced the Emilia-Romagna region, but between the 11th and 12th century the coinage of Lucca took over this territory, except in Parma and Piacenza districts.