Horseman advancing right, holding a spear, letter "A" below / Inscription in three lines "KNZ/bVELIK/I GSR V/SEYA RU/SI" ("Duke and Great Ruler of all Russia"). 15.5mmx11.5mm, 0.68 grams. Novgorod mint. Garost #3; Russian Wire Coins #75.

This is a full kopeck (not a denga), weighing 0.68 grams. The coin was minted in Novgorod in 1535-1538 when Ivan was still just a Grand Duke and not a Tsar.