GENIO POPVLI ROMANI portrait coins of the tetrarchies, arranged by mint. 
Struck c. 294-306.
   (To see them arranged by emperor, use these links: Diocletian, Maximian, Constantius, Galerius, or other later emperors.)

Click the image to see both sides of the coin.

All the mints for this type: London, Treveri (Trier), Lugdunum (Lyons), Ticinum, Aquileia, Rome, Siscia, Serdica, Thessalonica, Heraclea, Nicomedia, Cyzicus, Antioch, Alexandria. [Carthage and Ostia are also in RIC volume VI, but neither minted this type.]

Note:  This page lacks images of at least a dozen common emperor and mint combinations. It does not mean they are rare; it just means I don't happen to have that combination to show here.  Click here for a table listing all emperor and mint combinations. 

What's new?  2023, Feb. 22: Constantius as Caesar from Aquileia
    2023, Jan. 30:  Galerius as Augustus from Cyzicus
    2022,  Nov. 3: Coins from the rulers after the First Tetrarchy have been added (by mint, right after the coins of the First Tetrarchy rulers) .  
    2022, August 30:  Constantius as Caesar at Heraclea. 2022, August 16: Maximian at Trier.  Maximian at Cyzicus. 2022, August 6: Maximinus II at Antioch.

London:

London, Diocletian	London, Diocletian	London, Diocletian	London, Maximian

London, Maximian	London, Maximian	London, Constantius	London, Galerius

London, rulers after the First Tetrarchy:

Severus II, London, as Caesar	Maximinus II, London, as Caesar

Trier:

Diocletian, Trier	Diocletian, Trier	Diocletian, Trier	Maximian, Trier

Maximian, Trier	Maximian, Trier, left-facing	Constantius, Trier	Galerius, Trier

Trier, rulers after the First Tetrachy:

Severus II, Trier, as Caesar	Maximinus II, Trier, as Caesar	Constantine, Trier, as Caesar

Lyons (Lugdunum):

Diocletian, Lyons	Maximian, Lyons	Constantius, Lyons	Constantius, Lyons

Galerius, Lyons	Galerius, Lyons

Lyons, rulers after the First Tetrarchy.

Severus II, Lyons, as Caesar

Ticinum: 

Ticinum, Diocletian	Ticinum, Maximian	Ticinum, Constantius	Ticinum, Galerius

Ticinum, rulers after the First Tetrarchy.

Constantine, Ticinum, as Augustus

Aquileia:

Diocletian, Aquileia	Maximian, Aquileia	Constantius, Aquileia

Rome:

Diocletian, Rome	Maximian, Rome	Constantius, Rome	Constantius, Rome

Galerius, Rome

Rome, rulers after the First Tetrachy:

Siscia:

Diocletian, Siscia	Maximian, Siscia

Serdica:  (Note:  RIC says Serdica opened "c. 303-4" with personnel from Thessalonica so it did not mint these for as long as the other mints did.)
 

Diocletian, Serdica

Maximian, Serdica	Constantius, Serdica	Galerius as Caesar, Serdica	Galerius as Augusutus, Serdica

Serdica, rulers after the First Tetrarchy:   

Severus II as Caesar	Maximinus II as Caesar

Thessalonica:  (RIC says it opened c. 298/9 and closed c. 303 when it was moved to Serdica, closer to the Danube border.)
 

Diocletian, Thessalonica

Maximian, Thessalonica	Maximian, Thessalonica	Galerius, Thessalonica	Galerius, Thessalonica

Heraclea:  

Diocletian, Heraclea	Maximian, Heraclea	Constantius as Caesar, Heraclea	Constantius as Augustus, Heraclea

Galerius, Heraclea	Galerius, Heraclea

Heraclea, rulers after the First Tetrachy:

Severus II, Heraclea, as Caesar	Maximinus II, Heraclea, as Caesar	Constantine, Heraclea, as Caesar

Nicomedia:

Diocletian, Nicomedia	Maximian, Nicomedia	Constantius, Nicomedia	Galerius, Nicomedia, as Caesar

Galerius, Nicomedia, as Augustus

Nicomedia, rulers after the First Tetrarchy: 

Maximinus II, Nicomedia, as Caesar

Cyzicus:

Diocletian, Cyzicus	Maximian, Cyzicus	Maximian, Cyzicus	Constantius as Augustus, Cyzicus

Galerius, as Augustus, Cyzicus	Severus II, as Augustus, Cyzicus

Antioch: 

Diocletian, Antioch	Diocletian, Antioch	Maximian, Antioch	Constantius, Antioch

Constantius as Augustus, Antioch	Galerius, Antioch	Galerius as Augustus, Antioch	Maximinus II, Antioch

Diocletian, Antioch

Antioch, rulers after the First Tetrachy: 

Severus II, Antioch, as Caesar	Maximinus II, Antioch, as Caesar

Alexandria:

Diocletian, Alexandria	Diocletian, Alexandria	Diocletian, Alexandria           under Domitius Domitianus	Maximian, Alexandria

Maximian, Alexandria	Maximian, Alexandria	Constantius, Alexandria	Constantius, Alexandria

Galerius, Alexandria

Alexandia, other rulers: 

Domitius Domitianus, Alexandria	Constantine, Alexandria as Augustus (This type is smaller)	Licinius, Alexandria, as Augustus (This type is smaller)

Distinguishing Maximian from Galerius.  Using only the legend this can be tricky. Both used "MAXIMIANVS" in their legends. Here is a page explaining the differences in legends. Study the page you are on and you can see there is a difference in their portraits. 
 

Go to the GENIO POPVLI ROMANI pages organized by emperor.

Go to a page of links to pages about coins of the tetrachies. 

Go to the Table of Contents of the educational site.