Only in the reign of Diocletian appears an inscription alluding to the restoration of the city; Ammianus Marcellinus could only write of Trebizond that it was "not an obscure town."
Kun under kejser Diocletian findes der inskriptioner, der bevidner et forsøg på restaurering af byen; den romerske historiker Ammianus Macellinus kunne kun berette at Trabzon "ikke var en obskur by."