The fragment has been shown by scientific analysis and examination to be ancient. It is probably part of a bowl or globular bottle that was decorated with linear engraving in antiquity. However, the inscription and floral decoration appear to be modern additions. The inscription is copied from a Roman marble cinerary urn that has been known since 1716 and been in the British Museum since 1804. The decoration was therefore added to the fragment in order to enhance its attractiveness and value probably in the 19th century by an astute, well-informed, but unscrupulous person.
Caron, Beaudoin. 1997. "Roman Figure-Engraved Glass in The Metropolitan Museum of Art." Metropolitan Museum Journal, 32: no. 14, pp. 19, 45-46, fig. 68.
Pilosi, Lisa and Mark T. Wypyski. 2002. "Two Roman Engraved Glasses in the Metropolitan Museum of Art." Journal of Glass Studies, 44: pp. 30–34, figs. 2, 5–7.