This is correct EN sculptural usage, though obviously Italian.

From Jane Bassett and Peggy Fogelmann, 'Looking at European Sculpture. A guide to technical terms', V&A Publications, 1997, p. 9:

A term use to describe a work of art, or any portion thereof, which is inspired by or emulates ancient Greek or Roman precedents. The adjective might describe a small detail or motif, such as the hairstyle of a sculpted figure, or an entire composition based on an ancient source.

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http://www.vam.ac.uk/content/articles/i/interactive-a-guide-...



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The other term used is 'antiquising' in relation to style.

Some Sixteenth-Century Antwerp Carved Wooden Altar-Pieces in England By Kim Woods


During the late fifteenth and early sixteenth century, Antwerp's most prosperous decades as an international centre of trade, carved and polychromed wooden altar-pieces were manufactured in huge numbers in the city and exported all over Europe. They were produced both to commission and ready-made, the latter being sold at the Onser Liever Vrouwen Pand, an art market located on premises leased from the church of Our Lady from 1460.1 Just as their rivals in Brussels introduced craftsmen's marks in 1454 as guarantees of quality, so too from 1470 the Antwerp Guild of St Luke, to which carvers and painters alike belonged, required that the carvers' mark of the open hand and the castle mark of the painters should be applied once the completed altar- pieces had been inspected by the guild.2 The open hand is usually found on the heads of some of the figures and on the base of the carved sections, while the castle mark (or 'burcht') is commonly found on the sides of the case. The fact that these marks are usually clearly visible means that it is very easy to identify Antwerp products - though not, of course, those predating 1470. From c.1515 to c.1535 altar-piece production was dominated by the idiosyncratic style known as Antwerp mannerism in which exaggerated and distorted figure types are grouped in graphic narratives liberally enlivened with exotic dress and detail.3 Thereafter carvers began to adopt a more antiquising approach to decorative detail and even to the human figure,4 but the narratives remained just as embellished. Antwerp carved altar-pieces were still being produced in the mid-sixteenth century,5 though apparently at a reduced rate as the Reformation eliminated some markets and tastes changed.

http://burlington.org.uk/magazine/back-issues/1999/199903/

I would avoid the use of the word 'antique' because of its other connotations. Antiques need have nothing to do with the ancient world. It is 'in an ancient style' literally, but I've never heard anyone use that.

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I'm glad I could help. Please note, though, it is 'all'antiCa' not 'all'antiQUa'. Expect that was just a typo!