ARKADIA. Orchomenos. Septimius Severus, 193-211. Diassarion (bronze, 5.76 g, 22 mm). Laureate head right. Rev. OPXOMENIΩN Poseidon standing left, holding dolphin and trident. NCP p. 96, 2; BCD Peloponnesos 1589.2. Nearly very fine. Extremely rare.