My primary areas of focus in numismatic research are:
Early, Feudal and Tsarist Russia

Srebrenniks
First Russian silver coins of X-XI centuries

Grivnas
Russian silver bullions - grivnas

Russian Feudal coins
Coinage of the great and feudal Russian duchies (1380-1533)

Russian Tsarist coins
Coinage of the centralised Russian state prior to Peter I Alexeevich the Great (1533 - 1721)
Other areas of interest

Swiss coinage
Coins minted on the territory of present-day Switzerland from Celtic era up to 1848 with the primary focus on cantonal issues

Earliest coins of mankind
First and earliest coins minted by humanity from 600 BC to 300 AD including early money equivalents

Soviet Orders / Medals
Military and civil awards of the Soviet Union from 1918 to 1991

Banknotes
Banknotes of the world, French and British colonies and dependencies
