Caracalla received the name Antoninus as Caesar in 196 AD, but the inscription rather honoured him as an August after AD 198, either under his father Septimius Severus (until AD 211), or, more probably, during his own rule (AD 211-217).
There is another statue base from Augusta Traiana with identical text and engraved by the same stone-cutter, erected under the charge of the first archon Aur. Demetrius, but the name of the honoured person is missing (IGBulg 1556). Demetrius is attested as first archon in one more inscription, a statue base for Iulia Domna, erected by the city (IGBulg 1558). Mihailov supposes these statues could have been erected on the occasion of an imperial visit in Thrace in AD 196, 202 or 214. However, the use of the nomen Aurelius rather indicates a date after Caracalla's edict of AD 212.
The patronymic of the first archon, Apphus, is typical for Asia Minor.