How many was the most times you ever grinded an instance for a single specific item?

[Aster_E]

For the World of Darkness Tank body, I didn't keep track. I did it non stop from 2.4 (wasnt there at 2.3, only right before 2.4) till HW release.
IDK how many runs it was, but the queue wasnt too bad, so most of my runs were then.

Did HW, unlocked DRK, got DRK caught up, continued the story up, and went back to trying to get that body. (didnt touch savage or EX until 3.4)

Was pretty discouraged with the long 2-8 hour queues. (Sometimes Id queue up before bed, so I would be further along in the morning, still in queue of course)
Finally got it sometime in 3.5, after a few more months, but I was farming it far less by then, as I was doing Savage and EXs since 3.4
(Queues dropped to 30-45mins with some change i forget what, and was mostly short on sundays)

2.4 came out Oct28 2014, and patch 3.5 came out in Jan2017. So a bit over 2 years to get it.
My Lv50 PLD and Lv50 WAR, both went up from the exp in there alone (nothing else), PLD got to 60, and WAR got to 57. I tried getting it on an Alt I wanted it on as well, the WAR on my alt went from 50-60 as well.

WoD came out with 2.5, but yes that's a long time for a chest piece. @_@

[Avatre]

(Queues dropped to 30-45mins with some change i forget what, and was mostly short on sundays)

Quite likely due to HW relics needing something that the weekly quest in Mor Dhona gives(that can now be bought with Poetics); you know, the quest you do all three - LotA, CT, and WoD.