PERTINAX TO BALBINUS AND PUPIENUS By H. A. Seaby, revised by David R. Sear
Listing every known type and variety of silver coin issued by the Roman emperors Pertinax through Balbinus and Pupienus (AD 193 - 238).
161 pages; 382 photographic illustrations (by P. Frank Purvey) in the text; published by Seaby, London, 1982.
