Horseman advancing right, holding a spear // Inscription in 5 lines "TSAR I / VELIKIY/KNYAZ IB/AN VSEYA/RUSY" ("Tsar and Grand Duke Ivan of all Russia"). 14mmx13mm, 0.67grams. SKU X77-35485
This is a full kopeck (not a denga). The coin was minted in Novgorod in 1560's.