31 possible drops from Noble Dojorn - 29 if you remove the spells...
http://everquest.allakhazam.com/db/npc.html?id=3501
I can't recall how many items he drops per time 3-5 I believe.
So an 1 in 31 chance per loot slot.
As near as I can figure since each slot is figured independently of the others as you can have multiple drops of a single item, this run of luck is sadly possible.
Congrats on finally getting it however.