This monograph is a scientific and educational publication and is devoted to the study of the treasures of Dzhuchid coins broken in the Bulgar in the XIII - the first third of the XIV centuries. For the first time, through the analysis of the composition of coin treasures, the topography of their finds, the features of coin circulation and their causes were established. The authors revealed the nature of the monetary policy of the Dzhuchids in the Bulgarian vilayat during the studied period of time. The book takes into account 35 treasures, in addition, the metrology of coins is studied, 131 photographic tables with images of 1542 dirhams from most treasures are given.