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
Transmarine Traffic of the Italians
We have already indicated generally the nature of the influence exercised by transmarine commerce on the Italians who continued independent. The Sabellian stocks remained almost wholly unaffected by it. They were in possession of but a small and inhospitable belt of coast, and received whatever reached them from foreign nations--the alphabet for instance--only through the medium of the Tuscans or Latins; a circumstance which accounts for their want of urban development.
The intercourse of Tarentum with the Apulians and Messapians appears to have been at this epoch still unimportant. It was otherwise along the west coast. In Campania the Greeks and Italians dwelt peacefully side by side, and in Latium, and still more in Etruria, an extensive and regular exchange of commodities took place.
What were the earliest articles of import, may be inferred partly from the objects found in the primitive tombs, particularly those at Caere, partly from indications preserved in the language and institutions of the Romans, partly and chiefly from the stimulus given to Italian industry; for of course they bought foreign manufactures for a considerable time before they began to imitate them.
We cannot determine how far the development of handicrafts had advanced before the separation of the stocks, or what progress it thereafter made while Italy remained left to its own resources; it is uncertain how far the Italian fullers, dyers, tanners, and potters received their impulse from Greece or Phoenicia or had their own independent development But certainly the trade of the goldsmiths, which existed in Rome from time immemorial, can only have arisen after transmarine commerce had begun and ornaments of gold had to some extent found sale among the inhabitants of the peninsula.
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Reference address : https://www.ellopos.net/elpenor/rome/1-13-agriculture-trade-commerce.asp?pg=23