Round cutouts from dirhams in circulation in the 10th century: historical and archaeological entourage

In the 10th century round cutouts from dirhams appeared in the Dnieper and Don interfluve. In the period from 920s to 990s their weight decreased from 1,9 to 0,4 grams. The monetary system based on these artifacts was in operation, mainly, in the Seim region of the Severia land. A tradition of making heavier cutouts emerged almost at the same time, it persisted until the early 11th century. And while this tradition was followed in vast areas outside the region inhabited by the Severia population, it was less widespread outside Severia, which makes it still difficult to link this tradition to specific ethnopolitical unions.