Seaby, H.A., and others, Roman Silver Coins, vols. I-V, London, 1978-87; Sellwood, D., The Coinage of Parthia, 2nd edn, London, 1980, 322pp, 10 plates, dj; Sear, D.R., Roman Coins and their Values, 4th edn, London, 1988; Sear, D.R., Roman Coins and their Values, vols. I-IV, London, 2000-11; together with other references (7), by Head, Sear, Melville Jones, etc [Lot]. Publishers’ bindings; a good clean group of working references £80-100