MYSIA, SILVER TETRADRACHM OF ATTALOS, Pergamon, ca. 230 BC, 17.072g, 1h. Westermark V.XXXI-R2 (this coin). Franke-Hirmer 738. Old cabinet tone. Bold portrait. A few light marks under tone. Extremely fine. Former Olga Helen Knoepke (1917-1991) collection, Glendining 1986 (10 December) lot 262; former Dr. Jacob Hirsch (1874-1955) collection, Hess-Leu 1957 (7) lot 260