mugs, or drinking vessels?

on a recent Antiques Roadshow (US/PBS version--oregon)--some one showed up with a copper and silver trophy--it was a large hammered copper vessel, with ornate silver scrollwork at the base, and three handles--made from stags horns.

the expert appraiser said it was a sort of tyg

Onelook has only one listing for the word tyg... and that listing defines a tyg as a 12 handled vessel.

so... has anyone here (hi tsuwm!) ever heard of a tyg? anyone have a dictionary that list a tyg? and why a tyg? any other words with tyg as part of the word?

(any care besides me? its a good scrabble word for sure!)