I recently found 3 sets of Robes of the Seeker offered in one of the stores in Dagger Falls, which I thought was a bit odd, but not really anything to write home about.
Though they were all dyed black.
...And had the same amount of charges left in them, and not the starting amount.
This made me think maybe it was copied somehow and sold several times.
Which got me thinking that maybe those two sets of Steadfast Adamantine Splint Mail +1 were maybe not coincidentally found at the same time.
Maybe I'm just paranoid, but I thought that was a bit unsettling.