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
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
This was most painfully felt by Eumenes of Pergamus, the main upholder of that extraneous freedom among the Greeks. In vain he treated the cities subject to him with every sort of consideration; in vain he sued for the favour of the communities and diets by fair- sounding words and still better-sounding gold; he had to learn that his presents were declined, and that all the statues that had formerly been erected to him were broken in pieces and the honorary tablets were melted down, in accordance with a decree of the diet, simultaneously throughout the Peloponnesus (584).
The name of Perseus was on all lips; even the states that formerly were most decidedly anti-Macedonian, such as the Achaeans, deliberated as to the cancelling of the laws directed against Macedonia; Byzantium, although situated within the kingdom of Pergamus, sought and obtained protection and a garrison against the Thracians not from Eumenes, but from Perseus, and in like manner Lampsacus on the Hellespont joined the Macedonian: the powerful and prudent Rhodians escorted the Syrian bride of king Perseus from Antioch with their whole magnificent war- fleet--for the Syrian war-vessels were not allowed to appear in the Aegean--and returned home highly honoured and furnished with rich presents, more especially with wood for shipbuilding; commissioners from the Asiatic cities, and consequently subjects of Eumenes, held secret conferences with Macedonian deputies in Samothrace.
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Reference address : https://www.ellopos.net/elpenor/rome/3-10-third-macedonian-war.asp?pg=14