Kammala jumla mai zuwa: V. L. Yanin ne ya gabatar da asalin ka'idar kayan-kudi. Masanin kimiyyar ya bayyana cewa za a iya cika matsayin kuɗi don ƙananan biyan kuɗi ta hanyar wasu samfuran da aka daidaita da kuma yaduwa a Tsohuwar Rasha - kamar su lu'ulu'u da lu'ulu'u na cornelian, galibi ana nuna su a cikin dukiya tare da tsabar kudi, mundaye masu launuka iri-iri, da kuma ovruch slate spindle whorls. An ci gaba da haɗuwa da waɗannan abubuwan a cikin tarin tare da ingots, kuma a lokacin tonowa a Pskov, alal misali, an same su a cikin walat tare da tsabar kuɗin Yammacin Turai. A lokacin da VL Yanin hada da rarraba maps na gilashin mundaye da slate spindles whorls, kuma kuma plotted da iyakoki na monetary wurare dabam dabam yankin kafin
mamayewar Mongol, an gano cikakkun abubuwan da suka faru. Slate spindle whorl zai iya taka rawar da tsabar kudin. Ba shi yiwuwa a yi karya, saboda ramin ruwan hoda a Ovruch shine kawai a Gabashin Turai. A China, a cewar daya daga cikin fassarorin, spindle ya zama samfurin farko na tsabar kudi tare da rami mai kusurwa.