280s. Coins minted in his name include overstruck coins of Cassander (died 297) and Lysimachus (died 281), implying that his coins were produced until the early years of the 3rd century BC. Seuthes was symbolically buried in the tumulus of Golyama Kosmatka, without his actual corpse. It may well be that he had been killed in battle, perhaps fighting against Lysimachus or with him as an ally. A long inscription from Seuthopolis attests to the decline of the fortunes of the town and the trouble in Seuthes' household. It mentions the wife of Seuthes, Berenice, and their four (probably underage) sons Hebryzelmis, Teres, Satocos and Satalas. The document was issued in the name of Berenice and includes the phrase "when Seuthes was in good health", which implies that by the time of writing, he was either dead or dying and that Berenice had taken the rule. The inscription describes negotiations between Berenice and Spartokos, the ruler of Cabyle, a town once founded by Philip II. Indeed, Cabyle had not remained a Macedonian fort for long, but began to mint coins and developed into a city-state with considerable influence. Spartokos is known from several coins minted after 281 where he is addressed as king (basileus). Although not mentioned in the Seuthopolis inscription and known only from a few coins and an inscription in a grave from Kazanlak, Seuthes seemed to have another son named Roigos, who eventually became king. The fate of Seuthes' dynasty remains enigmatic. Other Thracian monarchs recorded in sources from the 3rd century, like Cotys or Scostocus, can not be proved to have been Odrysian, even if they are often labelled as such by modern authors. The end of Seuthopolis is a matter of debate, but it is clear that the town was destroyed still in the first half of the 3rd century. According to some scholars it was conquered by the Celts in the 270s. The Celts were ravaging much of the Balkan Peninsula since the early 270s and also led numerous incursions into Thrace. In 278 and led by Comontorius, they eventually founded a kingdom in eastern Thrace centered around Tylis. A newer theory proposes the destruction of the town in the 250s, based on a revamped dating of pottery, numismatic evidence and the presence of several Celtic artefacts. The archaeological evidence also shows the employment of siege artillery, which is unlikely to have been utilized