If it was made by Art Seymour, do Italian words apply? From a glossary of Venetian glass posted earlier:

Zanfirico – A type of glass cane made by assembling a bundle of different coloured rods and heating them until soft. The bundle is then attached to two metal pontils or metal rods before being drawn out and elongated. During this process the bundle is twisted to produce a spiral pattern. This process was originally known as vetro a retorti, but was renamed in recognition of a Venetian dealer called Antonio Sanquirico, who in the 1830s encouraged the revival of this and other traditional techniques on Murano.

http://www.bigbeadlittlebead.com/guides_and_information/venetian_glass_glossary.php