Horse and rider,"MOC-KBA" ("Moscow") below / Cyrillic inscriptions in 5 lines: "TSAR I VELIKIY KNYAZ MICHAIL FYODOROVICH VSEYA RUSI" ("Tsar and Grand Duke Michail Fyodorovich of All Russia"). 13mmx10mm, 0.50 grams. Moscow mint, issued 1615. Grishin #378.