Its from Hellfire Peninsula, all you do is capture 3 flags in the zone and you'll get 3 marks. If your lucky and theres no opposing faction around you can get 3 marks in under 10mins.
EDIT: Almost all the epics you can get at Lv 60 will quickly be replaced with better equipment by the time you hit 65, so its better to just Lv then worry about epics at 60.
Edited, Apr 18th 2007 1:54pm by Infanteer