Thucydides noted that the total tribute of 400 talents of gold and silver generated under king Seuthes I was distributed among Seuthes as well as the "chief men and nobles of the Odrysae". Several inscribed silver vessels mention king Cotys I and Cersebleptes and were most likely gifts or tribute. While the king received valuable gifts like gold, silver, textiles or horses, he was also expected to distribute gifts like artefacts, women or land to earn the loyalty and achieve the expansion of his military retinue. Such systems are inevitably unstable, royal authority would always remain rather fluid. Due to the fragmentary nature of the remaining sources, the royal court and the administration of the kingdom must remain largely obscure. It can be assumed that, as in early Macedon, the Odrysian kings formed the heart of the realm and controlled the policy and the minting of coins, appointed loyal deputies and commanded the troops on the battlefield. The realm was essentially the king's estate. Below the king was an elite of horse warriors and administrators deriving not only from the royal court, but also from rival tribes. Thucydides called said local rulers paradynasteuontes, meaning "those who share power". A similar elite class loyal only to the king, the hetairoi, could also be found in Macedon. The Odrysian kingdom appears to have been rather decentralized, consisting of many different regional elites vying for power. Their rule over their subjects, who lived in scattered hamlets, was very loose and exercised mainly through raiding and demanding tribute. There is no evidence that the early Odrysian kings had a fixed capital. Instead, they probably maintained a mobile court, moving throughout the kingdom and residing in fortified residences. These small fortified places, which the Greeks called , were the backbones of the Thracian aristocracy in a society that did not build towns or cities. This changed somewhat in the late 4th century, when Seuthes III founded Seuthopolis, marking the establishment of early state-like institutions which were probably inspired by those of Hellenistic Macedon. Seuthopolis' size always remained quite small, housing not more than 1.000 inhabitants. It is very likely that it was the home of the kingdom's aristocracy, while the common population continued to live outside the city walls, still practicing the agro-pastoral subsistence economy of old. Army When Sitalces' army invaded Macedon he supposedly fielded an army numbering 150.000 men, which is likely an