Roman Empire, a Collection of eighty-two Billion Tetradrachms of the Third Century AD, including many Philip I (AD 244-249), mint of Antioch, draped and laureate bust right, rev. eagle standing right (BMC p.214, 518), together with similar Billion Tetradrachms of Caracalla, Macrinus, Trajan Decius and other Emperors and Empresses, various mints, very fine to extremely fine, the majority with attractive dusty green or brown patina (82) (lot)