Commemorative coins that were issued during the 330s already refer to the city as Constantinopolis (see, e.g., Michael Grant, The climax of Rome (London 1968), p. 133), or "Constantine's City". According to the Reallexikon für Antike und Christentum, vol. 164 (Stuttgart 2005), column 442, there is no evidence for the tradition that Constantine officially dubbed the city "New Rome" (Nova Roma). It is possible that the Emperor called the city "Second Rome"