202 AD., Caracalla, Rome mint, Denarius, RIC 124a.

Caracalla, Rome mint,
Denarius (18-19 mm / 3.39 g), 202 AD.,
Obv.: ANTONINVS - PIVS AVG , laureate, draped bust of the young Caracalla right, seen from behind.
Rev.: CONCORDIA FELIX , Plautilla und Caracalla in Dextrarum Iunctio, Plautilla standing right clasping r. hands with Caracalla standing standing left, holding scroll.
RIC 124a ; BMC 272 ; C 23 (6 Fr.) .
Scarce: sixteen specimens in Reka Devnia hoard.
Struck for his marriage to Plautilla, 202 AD.

From wickipedia: Publia Fulvia Plautilla, Fulvia Plautilla or Plautilla (around 188/189 AD - early 212 AD) was a Roman Princess, short time Roman Empress and the only wife to Roman Emperor Caracalla.
Plautilla was born and raised in Rome. Plautilla belonged to the gens Fulvius of ancient Rome. The Fulvius family was originally of plebs status, who originally came from Tusculum, Italy and were active in Roman politics, since the Roman Republic. Her mother is unknown and her father was Gaius Fulvius Plautianus the Commander of the Praetorian Guard, consul and close ally to Roman Emperor Lucius Septimius Severus, (who was the father of Caracalla). She also had a brother, who had the same name as her father.
Severus and Plautianus arranged for Plautilla and Caracalla to be married in 202 AD. Caracalla was chosen and forced by his father to marry Plautilla. They were married in a lavish ceremony. Caracalla and Plautilla had a very unhappy marriage. Caracalla never acknowledged, Plautilla as his wife and despised her. According to Cassius Dio, Plautilla had a profligate character.
According to numismatic evidence, Plautilla bore Caracalla a daughter (whose name is unknown) in 204 AD and in that year, her father-in-law ordered the erection of the arch, Arcus Septimi Severi, which in scripts and honors, Septimius Severus, Severus’ wife the Roman Empress Julia Domna, Caracalla, Plautilla and her brother-in-law Publius Septimius Geta.
On 4 February 211 AD, her father-in-law died and her husband and brother-in-law were proclaimed as Severus’ heirs and Roman Emperors, in York, England. Within a year, Caracalla ordered the death of his younger brother Geta and not so long after ordered the deaths of 20,000 supporters of Geta, including Plautilla, her daughter with Caracalla and Caracalla‘s brother-in-law.
Before her death, Plautilla and her daughter by Caracalla, were exiled by her husband to Sicily and then to Lipari, where she died with her daughter. In exile, her and her daughter were treated very harshly, supplied very scarcely for the necessaries of life. Plautilla and her daughter were strangled on Caracalla's orders. Coins that have survived of her, are mainly from the reign of her father-in-law. Inscriptions of her on coins are: Plautilla Augusta or Plautilla Augustae.