“Early Middle Ages of the [Balkan] Serbs is considerably less documented than the Early Middle Ages of the Croats. That is, there is considerably less evidence for the early medieval history of the Serbs compared to that of the Croats: both material remains and written sources.

The earliest history of the [Balkan] Serbs [unlike early history of the Croats] knows almost no sources that would allow for the verifying of Porphyrogenitus’ [De Administrando Imperio] history. Namely, no inscriptions or grants [of early medieval Serb rulers] have been preserved, and the number of preserved [Serbian] buildings from the period before the 12th century is insignificant.

Apart from the church of St. Peter in Ras (dated to the late 9th or early 10th century) and the foundations of several buildings from the same period, there are almost no preserved remains of Serbian early medieval architecture. In this context, the recent discovery, if the find is authentic and its interpretation correct, of a gold signet ring with a Greek inscription and the mention of Strojimir is valuable” – medievalist Trpimir Vedriš.