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.Roman coins and Roman communication. A discussion of the ways in which Roman coins may have communicated with their users. Richard Reece. https://www.academia.edu/38183328/Roman_coins_and_Roman_communication.doc 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.Sear, D.R., (2011), Roman Coins and Their Values Volume IV, nos.13767-74, pp.218-19.
