In the Retail-Version there is neither a code-entry nor a graphic, that is related to this quest in any way, but
if you read on, you'll find out about one piece of armor and another interesting item ( Farnham's speech) in (an)
earlier version(s), that would fit well into the picture.
-)An non-quest-assigned entry called Ancient Rune Shield does appear in the PrDemo-code(only there), which
could be considered as a rather perfect match, since as we're talking about a relic from the days of the sin war,
`ancient` would sum it up quite nicely.
-)When thinking of a graphic, that could be interpreted as an ancient rune-shield, only the following
strange-looking, rune-ornated as well as trapezoidal formation comes to mind (in the PrDemo the feature, which
enabled alternate graphics for unique-items wasn't integrated, that's why the ones of the base-items are used
instead, even though the mpq-archive is full of images, that show something, which can only be one-of-a-kind, so
it is, as so often, just a guess): [appears in both the PrDemo's & the Beta's MPQ-archive]