Hello,
I know this thread is pretty old, but I have all of those DTS S.E. Disks.
Star Wars S.E.
Empire Strikes Back S.E.
Return of the Jedi S.E.
and Episode 1 The Phantom Menace
All original DTS disks.
All in EXELLENT condition.
I am willing to sell them all.
For the sake of preserving them, I think this has already been recently accomplished. So you might have better luck with a collector in the Marketplace subforum.