Halls of Honor is a place where I've been hunting extensively for the last few days. I'm also a 270 tailor.
Off of any mob in that zone, I've discovered the following:
50% chance drop for anything new (in addition to the normal drops there.)
common drops - fine silk/leather pelt and rhenium ore ... both trivs for their respective templates are in the 270-290(ish) range
uncommon drops - excellent silk/leather and tungsten ore ... both trivs are ~low 300s range
occasional - pristine silk/leather and indium ore (around 220-250) range trivials for their respective templates.
