Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
In the regions on the east of Macedonia towards the lower Danube the
most powerful of the Thracian chieftains, the brave and sagacious
Cotys, prince of the Odrysians and ruler of all eastern Thrace from
the Macedonian frontier on the Hebrus (Maritza) down to the fringe of
coast covered with Greek towns, was in the closest alliance with
Perseus.
Of the other minor chiefs who in that quarter took part
with Rome, one, Abrupolis prince of the Sagaei, was, in consequence
of a predatory expedition directed against Amphipolis on the Strymon,
defeated by Perseus and driven out of the country. From these regions
Philip had drawn numerous colonists, and mercenaries were to be had
there at any time and in any number.