SEVEN ROMAN BILLON OR COPPER ALLOY COINS OF THE REPUBLIC AND LATER. some probably commemorating the 1000th anniversary of Rome's founding, in 248 (during rule of Phillip the Arab) with reverse subjects including Romulus and Remus, and Rome personified, comprising four copper alloy, about 18 mm. Diam., and two silver, 20 and 15 mm. Estimate $200-275