Severina, wife of Aurelian. Augusta 274-275 A.D. -  AE Antoninianus - 23.46mm?, 3.28g
Obverse - SEVERINA AVG
Severina, her diademed and draped bust right,
resting on a crescent.
Reverse - PRO-VIDEN-D-EOR
?XXT in Exergue
Concordia standing left, holding standard in each hand.

The image below was photographed by Uwe Neumann.The image above is my own scan.
Severina
Minted at the ?th officina (V?) in Ticinum (Pavia, Italy) in 275? A.D.

Reference: 
Webb, P.H., "Roman Imperial Coinage", Volume 5, Part 1 (RIC), p317?, nr. 8.
Sear, D.R., "Roman Coins and their Values" (RCV Millennium Edition), Vol. 3, p439, nr. 11706.
Cohen, H, "Descriptions Historique des Monnaies frappees sous l'Empire Romain" (C), Vol 6, p210?, nr. 12.
Van Meter, D., "Handbook of Roman Imperial Coins" (VM), p258, nr. 4?.
Suarez, R., "Encyclopedia of Roman Imperial Coins II" (ERIC II),  p642, nr. 64? (B2, O4, R04, T2, M6, Exe: VIXXI)
Suarez, R., "Encyclopedia of Roman Imperial Coins II" (ERIC II-Digital),  p642, nr. 64? (B2, O4, R04, T2, M6, Exe: VIXXI)
Kampmann, U., "Die Münzen der Römischen Kaiserzeit", 2. Auflage (KM2), p352, nr.107.3?

Ex Uwe Neumann collection.
Quality: Extra Fine+
Rarity: ?