Horse and rider right, ΠC below / Cyrillic inscriptions in 5 lines: "TSAR I VELIKIY KNYAZ BORIS FEYODOROVICH  VSEYA RUSI" ("Tsar and Grand Duke Boris Fyodorovich of All Russia"). 14mmx11mm, 0.57 grams. Novgorod mint, issued 1604. Grishin #204.

Extremely rare, rated R2 in Grishin (out of 10, R2 is the second highest rarity ranking!)

Boris Fyodorovich Godunov c. 1551 23 April [O.S. 13 April] 1605) was de facto regent of Russia from c. 1585 to 1598 and then the first non-Rurikid tsar from 1598 to 1605. The end of his reign saw Russia descend into the Time of Troubles.