More evidence from this vox raid slideshow. High level necro pet on vox raid is a white decaying-skeleton-size and dual-wielding daggers (only brown pets should do this post-change). Screen grab attached, link to video below.
(Bonus evidence that necros were still using CoB because Lich wasn't scribable until like September 1999. See here:
https://www.project1999.com/forums/s...d.php?t=336032 )
https://youtu.be/akdgif0QOkQ?t=199