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
On the other hand, among the Italians--not among the Sabellian stocks merely, but even among the Latins--native sculpture and design were at this period only coming into existence. The most considerable works of art appear to have been executed abroad. We have just mentioned the statues of clay alleged to have been executed in Veii; and very recent excavations have shown that works in bronze made in Etruria, and furnished with Etruscan inscriptions, circulated in Praeneste at least, if not generally throughout Latium.
The statue of Diana in the Romano-Latin federal temple on the Aventine, which was considered the oldest statue of a divinity in Rome,(21) exactly resembled the Massiliot statue of the Ephesian Artemis, and was perhaps manufactured in Velia or Massilia. The guilds, which from ancient times existed in Rome, of potters, coppersmiths, and goldsmiths,(22) are almost the only proofs of the existence of native sculpture and design there; respecting the position of their art it is no longer possible to gain any clear idea.
21. When Varro (ap. Augustin. De Civ. Dei, iv. 31; comp. Plutarch Num. 8) affirms that the Romans for more than one hundred and seventy years worshipped the gods without images, he is evidently thinking of this primitive piece of carving, which, according to the conventional chronology, was dedicated between 176 and 219, and, beyond doubt, was the first statue of the gods, the consecration of which was mentioned in the authorities which Varro had before him. Comp, above, XIV. Development of Alphabets in Italy.
22. I. XIII. Handicrafts
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Reference address : https://www.ellopos.net/elpenor/rome/1-15-art.asp?pg=37