Constantine I A.D. 312- 313 21mm 4.7g IMP C CONSTANTINVS P F AVG; laureate and cuirassed bust right. HERCVLI VICTORI; Hercules standing right, leaning on club and holding Victory on globe and lion’s skin. In ex. R S RIC VI Rome 299 Here's a recent acquisition. This rarer reverse type was issued after the defeat of Maxentius. During this period, the mint of Rome struck coins for Maximinus and Licinius I also, but a few types, including this one, were struck only for Constantine I. It is also an unlisted workshop (RIC VI only lists P and Q) and is ex- Dattari. The use of the Hercules reverse is perhaps a reference to the Tetrarchic system in which rulers belonged to either the family of Jupiter or Hercules; though there were HERCVLI VICTORI reverses issued from the East for all three rulers. On a side note-- there is also a herculean allusion from Praxagoras of Athens via the review of Photius in which Constantine was forced by Galerius to fight a lion. http://www.constantinethegreatcoins.com/Constantine/Photius.html CNG’s Dattari bio “Giovanni Dattari, an Italian businessman born in the mid-1850s, moved to Cairo, Egypt 30 years later and became fascinated with the Roman provincial coinage of Alexandria. His vast and comprehensive collection of Roman Egyptian coinage was first published in 1901 and still serves a primary reference for the series. Dattari also collected other coin types as well, including nearly 20,000 Roman Imperial coins of Alexandria and other mints, with the same eye for quality and variety that he devoted to the provincial coinage, although he did not employ the same intensive cataloguing and record keeping. His collections were dispersed in large group lots in the early 1900s, several of which remained intact until they were acquired by two European dealers in recent years and were sold in a series of auctions.” post em if you got em-- ex- dattari Constantine coins and HERCVLI VICTORI from the tetrarchy period.