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
It was these ports that the Caerites refrained from robbing, and it was beyond doubt through this tolerant attitude that Caere, which possessed but a wretched roadstead and had no mines in its neighbourhood, early attained so great prosperity and acquired, in reference to the earliest Greek commerce, an importance even greater than the cities of the Italians destined by nature as emporia at the mouths of the Tiber and Po.
The cities we have just named are those which appear as holding primitive religious intercourse with Greece. The first of all barbarians to present gifts to the Olympian Zeus was the Tuscan king Arimnus, perhaps a ruler of Ariminum. Spina and Caere had their special treasuries in the temple of the Delphic Apollo, like other communities that had regular dealings with the shrine; and the sanctuary at Delphi, as well as the Cumaean oracle, is interwoven with the earliest traditions of Caere and of Rome.
These cities, where the Italians held peaceful sway and carried on friendly traffic with the foreign merchant, became preeminently wealthy and powerful, and were genuine marts not only for Greek merchandise, but also for the germs of Greek civilization.
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Reference address : https://www.ellopos.net/elpenor/rome/1-10-greeks-italy-tuscans-carthaginians.asp?pg=25