Coinage is the main source of information about the rogue emperor; his coinage was issued from mints in
Londinium,
Rotomagus (Rouen) and a third site, possibly
Colonia Claudia Victricensis (Colchester). He also used them for sophisticated propaganda. He issued the first proper silver coins that had appeared in the
Roman Empire for generations, knowing that good quality bullion coinage would enhance his legitimacy and make him look more successful than
Diocletian and
Maximian. In April 2010 a large
hoard of over 52,500 Roman coins was unearthed in a field near
Frome,
Somerset. 766 of these coins were determined to have been produced during Carausius's reign, of which only 5 were silver
denarii. This find roughly equates to four years' pay for a Roman legionary, but the presence of later coin issues implies that the group was not deposited until after Carausius's death.
Character portrayal His initial issues show him as rough and thuggish, though the technical standard of die cutting on good specimens can be seen to be excellent. The intention was to portray a rough and thuggish man; his later coins show him as trim and beneficent.
Claims of Imperial legitimacy He struck coins that showed three portrait heads on the reverse instead of the usual one, and a legend on the obverse including PAX AVGGG, the peace of
three Augusti. This would imply that he was recognized by the other two current Augusti, Diocletian and Maximian, but their own coins of the time proclaim the attributes of only two Augusti, PAX AVGG. Carausius also had himself depicted as a member of the Tetrarchy's college of emperors, issuing coins with the legend CARAVSIVS ET FRATRES SVI, 'Carausius and his brothers' with portraits of himself with
Diocletian and
Maximian.
Virgilian and other literary references Carausius appears to have appealed to native British dissatisfaction with Roman rule; he issued coins with legends such as
Restitutor Britanniae (Restorer of Britain) and
Genius Britanniae (Spirit of Britain). Some of these silver coins bear the legend
Expectate veni, "Come long-awaited one", recognised to allude to a messianic line in the
Aeneid by the Augustan poet
Virgil, written more than 300 years previously. Some of the silver coins bear the legend RSR in the
exergue (an area on a coin below the legend). This was considered a mystery for some time. Three Carausian copper-alloy medallions, now in the
British Museum, have also survived. One has the reverse legend VICTOR CARAVSIUS AVG GERM MAX with RSR in the exergue; the second has the reverse legend VICTOR CARAVSI AVG ('The Victory of Carausius Augustus') with INPCDA in the exergue; and the third is too damaged for an exergue legend to be visible but bears the reverse legend PACATOR ORBIS 'Peace-bringer to the world'. The medallions depict Carausius in consular garb and are around 34-35 mm, weighing ~22 g. The medals appeared on the market in the twentieth century and reached the British Museum in 1972, 1967 (this one was first shown to the Museum in 1931) and 1997 respectively. All bear evidence of chemical corrosion resulting from burial of some sort as can be seen from their present appearance. Since 1998 these letters have been recognised as representing the sixth and seventh lines of the Fourth
Eclogue of Virgil, which reads
Redeunt Saturnia Regna, Iam Nova Progenies Caelo Demittitur Alto, meaning "The Golden Ages are back, now a new generation is let down from Heaven above". Virgil's works, or at any rate quotations from them, were current in Roman popular culture.
Suetonius cites three instances in which Virgilian lines were quoted.
Cassius Dio cites an instance of a praetorian tribune quoting Virgil as a means of criticising
Septimius Severus after an attack on Hatra went badly in 199. Copper-alloy medallions already existed in the contemporary repertoire of imperial Roman coinage so Carausius's production should not be considered exceptional.
Numerian (283-4) and his brother
Carinus (283-5) both issued copper-alloy medallions of similar size and weight to those of Carausius, often depicting the three Monetae (goddesses of the mint). Another depicts Numerian in consular garb and on the reverse himself and his father
Carus in a quadriga pulled by Victory with the legend TRIVNF.QVADOR, 'the triumph over the
Quadi tribe', and is clearly similar in tone to the Carausian INPCDA medallion. Although the Virgilian reference might seem remarkable in the context of late third century Roman Britain it is apparent from other contemporary literature that the Tetrarchy legitimist regime was utilising Virgilian allusions and references in its propaganda, and claiming itself to have restored a Golden Age. 'The rule of Saturn over a golden age is a literary commonplace ... as is the association of any emperor's reign with the same thing'. An imperial panegyric to
Maximian states 'Indeed, as the fact is, those golden ages which once flourished briefly in the reign of Saturn, are now reborn under the perpetual guidance of Jove and Hercules.'
Lactantius, a Christian writer of the period and opponent of the Tetrarchs, makes a number of disparaging references to the Tetrarchs and their Saturnian pretensions which seem to be a refutation of official propaganda. Carausius was claiming to represent a revival of traditional Roman virtues and the great traditions of the Empire as established by
Augustus in the last decades of the first century BC, not in
Rome but in Britain. However, he appears to have adopted a propaganda theme that was already current in Tetrarchal publicity which corresponds with the use of similar literary allusions. An alternative school of thought exists which argues the medallions must be eighteenth-century fantasy pieces on the basis that such arcane literary allusions would have been too obscure to Carausius and his army. This argument contends that the antiquarian
William Stukeley or someone like him found the RSR on Carausius's silver coinage, and noted that this matched the Redeunt Saturnia Regna (RSR) of the 6th line of the Fourth Eclogue. Thus inspired, the medallions were created with the next line of the Eclogue included on one of them. The central points of this argument are that Stukeley had published a detailed book on Carausius and his coinage, and that the medallions have no known provenance. However, this published argument does not offer any evidence to support Stukeley's involvement or motives (since Stukeley never mentions the medals or a Virgilian expansion of the RSR coins known to him), or include discussion of the literary evidence of the contemporary panegyrics or any of the scholarly publications concerning them, or explain why the medallions appear on the basis of their present appearance to have been buried and why they were unknown until 1931 when the INPCDA one was first brought to the British Museum.
Milestones A
milestone from
Carlisle with his name on it suggests that the whole of
Roman Britain was in Carausius's grasp. The inscription reads (with expansions in square brackets) "IMP[eratori] C[aesari] M[arco] | AVR[elio] MAVS[aeo] | CARAVSIO P[io] F[elici] | INVICTO AVG[usto]", this translates as "For the Emperor Caesar Marcus Aurelius Mausaeus Carausius Pius Felix Invictus Augustus". The title indicates he considered himself equal to the
Tetrarchy's
senior emperors (
Augusti), rather than their subordinate junior emperors (
Caesares). The milestone was reused in about 306, burying the first inscription and adding a new one at the other end, which translates as "For Flavius Valerius Constantinus, most noble Caesar" and refers to
Marcus Flavius Valerius Constantius Herculius Augustus (Constantius I). Some more text on the stone, probably a continuation of the Carausius inscription after a gap because it is orientated the same way, was chiselled away, presumably when the stone was reused; the traces remaining suggest it included (translated) "... the Emperor ...". ==In medieval legend==