BMCRE

Coins of the Roman Empire in the British Museum, 6 volumes:

Volume 1: Augustus to Vitellius (1923)

Volume 2: Vespasian to Domitian (1930

Volume 3: Nerva to Hadrian (1936) 

Volume 4: Antoninus Pius to Commodus (1940)

Volume 5: Pertinax to Elagabalus (1950)

Volume 6: Severus Alexander to Pupienus (1963)

BMCRE

Mattingly, H. and R.A.G. Carson. Coins of the Roman Empire in the British Museum. (1923 - 1963).

Volume 1: Augustus to Vitellius (1923)

Volume 2: Vespasian to Domitian (1930

Volume 3: Nerva to Hadrian (1936) 

Volume 4: Antoninus Pius to Commodus (1940)

Volume 5: Pertinax to Elagabalus (1950)

Volume 6: Severus Alexander to Pupienus (1963)