The publication "Russian Medieval Coins" is dedicated to the entire period of the medieval history of Russia, or, more precisely, to the entire princely period from the first Kyiv coins to the wedding of Ivan Vasilyevich the Terrible to the kingdom. The book also included a significant array of payment bullion, which played a key role in the Russian monetary circulation of the XII-XV centuries. Until now, information about these unusual monuments of numismatics has been fragmented and inaccessible to the mass reader. The classification of imitations and suprachekans produced in the Russian principalities was noticeably expanded, the foundations (most often Dzhuchid dengues) on which the latter were placed were investigated.