Great Principality of Ryazan. Appanage of Pronsk. Time of Great Prince Ivan Vladimirovich, ca. 1408-1430. Denga. 1.37 gm.
G/P 5757D (R II), Spassky p.88, fig. 61, 8. Ryazan tamgha / Ф-shaped tamgha; Pronsk legend around. Extremely rare. Toned. Extremely fine for type