Constantius I Chlorus Follis

Constantius I Chlorus's follis coinage was struck under the same reformed system introduced by Diocletian, and as one of the four Tetrarchic rulers, his coins share the standard designs of the period while also documenting his specific responsibility for the far-western provinces, including Britain and Gaul. His coinage holds special historical interest because of his connection to his far more famous son, Constantine the Great.

For collectors, a Constantius I follis represents both an accessible piece of Tetrarchic coinage and a tangible link to the beginning of the Constantinian dynasty that would soon reshape the Roman world.

Flavius Valerius Constantius, later known as Constantius I or by the nickname 'Chlorus' (meaning 'pale' or 'the pale one,' likely a later Byzantine-era attribution), was appointed Caesar in the western Tetrarchy in 293 AD under Maximian. He is particularly noted for his campaigns in Britain, including defeating the usurper Allectus and restoring the province to central Roman control around 296 AD.

Upon Diocletian and Maximian's joint abdication in 305 AD, Constantius was elevated to senior Augustus of the west, but he ruled for only about a year before dying at Eboracum (modern York) in 306 AD while campaigning in Britain. His death there prompted his troops to immediately proclaim his son Constantine as emperor, setting in motion the events that would eventually lead to Constantine's sole rule and the eventual Christianization of the empire.

The obverse shows a laureate, cuirassed bust of Constantius, with legends such as CONSTANTIVS NOB CAES during his time as Caesar, later changing to reflect his elevation to Augustus (CONSTANTIVS PF AVG) after 305 AD.

The primary reverse type follows the Tetrarchic standard, GENIO POPVLI ROMANI, showing the Genius figure with patera and cornucopia, matching the designs used by Diocletian, Maximian, and Galerius during the same period. Mint marks identify western production centers particularly associated with his command, including Trier, Lugdunum, and London.

The coin follows the standard follis format of roughly 25-27mm with silvered bronze surfaces typical of the era. Collectors identify Constantius's coins specifically through the obverse legend and, for advanced specialists, through his particular mint associations in the far western provinces, especially London, which struck coinage tied to his British campaigns.

Constantius I folles are generally available and reasonably affordable, with typical examples often found in the roughly $25 to $60 range in circulated condition. Coins from the London mint carry added interest for collectors of British-related ancient coinage and can sometimes command a modest premium due to specific mint appeal, even though the type itself is not especially rare.

As with other Tetrarchic folles, strike quality, silvering preservation, and clarity of mint marks are the primary factors influencing value beyond basic type and mint rarity.