Q HER ETR MES DECIVS NOB C, bare-headed and draped bust right / PIETAS AVGG; Mercury standing left, holding purse and caduceus.. 23mm, 3.46 grams. Rome mint. RIC 142b; C.11..
Herennius Etruscus was Roman emperor in 251, ruling jointly with his father Decius. He was born in c.227 AD. His father, Decius, was proclaimed emperor by his troops in September 249, while leading troops in Pannonia and Moesia, in opposition to Emperor Philip the Arab. Herennius Etruscus was elevated to caesar in 250, then further raised to augustus in May 251. When the Goths, under Cniva, invaded the Danubian provinces, Herennius Etruscus was sent with a vanguard, followed by the main body of Roman troops, led by Decius. They ambushed Cniva at the Battle of Nicopolis, routing him. Herennius Etruscus was killed in the Battle of Abritus, alongside his father.