BITHYNIA, Nicaea. Gallienus. AD 253-268. Æ Tetrassarion (23mm, 6.77 g, 1h). Struck circa AD 259/60. Radiate, draped, and cuirassed bust right, seen from the front / City walls of Nicaea viewed from aerial perspective. RG 848. Earthen green patina. VF. Rare.