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
Structural and Plastic Art
A higher idea of what the Italians were able to do in these departments is furnished by their works of structural and plastic art, which are closely associated with the mechanical sciences. Here too we do not find phenomena of real originality; but if the impress of borrowing, which the plastic art of Italy bears throughout, diminishes its artistic interest, there gathers around it a historical interest all the more lively, because on the one hand it preserves the most remarkable evidences of an international intercourse of which other traces have disappeared, and on the other hand, amidst the well-nigh total loss of the history of the non-Roman Italians, art is almost the sole surviving index of the living activity which the different peoples of the peninsula displayed.
No novelty is to be reported in this period; but what we have already shown(31) may be illustrated in this period with greater precision and on a broader basis, namely, that the stimulus derived from Greece powerfully affected the Etruscans and Italians on different sides, and called forth among the former a richer and more luxurious, among the latter--where it had any influence at all--a more intelligent and more genuine, art.
31. Cf. I. XV. Plastic Art in Italy
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Reference address : https://www.ellopos.net/elpenor/rome/2-09-art-science.asp?pg=35