Doing digging, I expect the item #s needed are 13362 and 13363? I just want to know if its is functioning and you can get the second item (proof of where the nobles sleep) off the nobles or another npc or vendor. If so, I'll keep trying. Last evidence of a drop reported on zam was 2002 as a comment with no data.
This thread talks about it - my comment is at the very end: https://www.tapatalk.com/groups/oldunsolvedquestsineverquest/viewtopic.php?f=1&t=405&p=2526#p2526
This quest cannot be completed, for an unusual reason. The NPCs in the Rathe Mountains that drop these items are vendors. They were set to non-combatable as part of a blanket change in June of 2006. They still have the items, but cannot be killed to acquire the items.
