I suppose you mean this:
That might be it, but there needs to be 3 different belts for 3 different sets, 1 of which is missing from the game right now.- Added T2 / T3 belt into chap 4 to 9 Pq white chest
- Added T2 / T3 Helm and shoulders into chap 4 to 9 PQ Green and Blue Chest.
Its probably regular T3 belt that goes with Devastator/Duelist that we already have
I did some T3 PQs about a week ago and there were no rewards in gold bags besides Mayhem pieces
Looks like those items are exclusive to their bag rarity which makes them pain in the ass to get...