When I search the Allakhazam archives for July 2001 (the earliest capture that seems to show Velious quest armor, the screenshots all seem to be from April 2001 though), I see no Highsun for Chest or Legs, as Nilbog mentioned, but I do see Twilight armor:
The screenshots don't feature Vahshir in the race list, so that theory seems to be out.
https://web.archive.org/web/20010711...html?item=5648
https://web.archive.org/web/20010711...html?item=5615
https://web.archive.org/web/20010711...html?item=5649
I see Highsun vambraces, submitted a bit earlier (by a couple of weeks) than the Twilight armor:
https://web.archive.org/web/20010711...html?item=5297
I'm not sure when or if Twilight replaced Highsun. But Twilight seemed to become available relatively early in Velious, maybe even from the start? Muddy issue.