Antonia Minor, mother of Claudius (died 37 A.D.) - Brass Dupondius - 29mm, 14.76g
Obverse - ANTONIA AVGVSTA
Antonia, her draped bust right.
Countermark NCAPR
Reverse - TI CLAVDIVS CAESAR AVG P M TR P IMP
Claudius standing left, veiled, holding simpulum.
S C
Image
Minted under Claudius in Rome in 41-42 A.D.

Reference:
Sutherland, C.H.V., "Roman Imperial Coinage", Volume 1, revised edition (RIC), p127, nr. 92.
Mattingly, H., "Coins of the Roman Empire in the British Museum", Volume 1 (BMCRE), p188, nr. 167.
Sear, D.R., "Roman Coins and their Values" (RCV Millennium Edition), Volume 1, p375, nr. 1902.
Sear, D.R., "Roman Coins and their Values" (RCV 4th Revised Edition), p112, nr. 638.
Cohen, H, "Descriptions Historique des Monnaies frappees sous l'Empire Romain" (C), Volume 1, p254, nr. 47.

Approximate references:
Van Meter, D., "Handbook of Roman Imperial Coins" (VM), p82, nr.16, variety (a.)
Suarez, R., "Encyclopedia of Roman Imperial Coins II" (ERIC II),  p39, nr.112 (B1, O24, R7, T15, M5)
Suarez, R., "Encyclopedia of Roman Imperial Coins II" (ERIC II-eBook),  p37, nr.112 (B1, O24, R7, T15, M5).
Kampmann, U., "Die Münzen der Römischen Kaiserzeit", 2e Auflage (Kampmann), p61, nr.12.23.

Quality: Fine+
Rarity: C (Common)