The validity of the Kondratieff’s theory of long-waves is still a controversial issue among historians, economic, social and political science scholars. In this work, both original Kondratieff’s data (never processed by wavelet analysis in their whole dataset) jointly with additional among the longest and most representative economic indicators are investigated. By the application of this statistical technique, the main purpose of the paper is to furnish an additional information to the literature. We trace evidence on the presence of coherent periodicities in the case of original Kondratieff time series and for other relevant and up-dated economic indicators as well.
(JEL C22, E32, E37)