Lucius Ceionius Commodus was born on 15th December AD 130. On New Year's Day AD 138 the young Lucius was adopted as joint heir with Marcus Aurelius by Antoninus Pius. They became Rome's first co-emperors in AD 161; but Lucius died from a stroke returning from the Danubian frontier in AD 168 at the age of 38.

Main Roman Coin Book and Other References:

RIC = Mattingly, Harold    The Roman Imperial Coinage
BMC = Coins of the Roman Empire in the British Museum
RSC = Seaby, H A    Roman Silver Coinage
RCV = Sear, David R    Roman Coins and Their Values
Cr = Crawford, Michael    The Roman Republican Coinage
SB = Sear, David R    Byzantine Coins and Their Values
S = Coins of England and the United Kingdom
WW = Wildwinds.com (reference & attribution site)