Faustina II Denarius Ancient Roman Empire Silver Coin 145AD RIC 495A

Obverse: FAVSTINA AVGVSTA, Bust of Faustina the Younger, bare-headed, with hair waived and coiled on back of head, draped, right
Reverse: AVGVSTI PII FIL, Venus, draped. standing left, holding Victory on right hand and resting left on round shield set on helmet on ground
Date: c. 145-161 A.D.
ID: RIC III Antoninus Pius 495A
Size: 18mm diameter, 3.06g weight
Composition: Silver

Venus was the Roman goddess of love, though she was sometimes associated with military victory and triumph as well. 

Faustina the Younger (or Faustina II, Faustina Jr, etc) was the daughter of Emperor Antoninus Pius and Empress Faustina the Elder. After Antoninus made the young Marcus Aurelius his heir to the throne, he married Faustina to Marcus to further cement the succession plan. 

Accounts of Faustina's life are limited and unreliable. It is possible she helped orchestrate a revolt against her husband in 175 A.D. while he was ill, perhaps having received a false report of his death. Her intent in supporting that revolt was reportedly to protect her son, the future emperor Commodus. The revolt was suppressed and Faustina died in uncertain circumstances later that same year. Marcus had her deified (proclaimed to be a god) following her death, which indicates that she did not die while in disgrace. 

Faustina bore Marcus at least 14 children, only six of whom survived to adulthood (not atypical for the time period). The single surviving son, Commodus, became emperor following Marcus' own death in 180 A.D. - he was the first natural son to succeed his father as emperor in over 100 years.