WireWorld Equinox Balanced?

As a kicker on an eBay deal the seller threw in these WireWorld cables. They are very black with black Beltron/UK Made gold plated XLR's. The sheath is marked "WireWorld Equinox Balanced Interconnect (QBI) Made in USA. U.S. Patent No. #5,298,682". Can anyone tell me anything of their vintage, original list price or where they stood in the Wireworld line? An e-mail to Wireworld produced no response. Thanks in advance to the WireWorld experts.