Ah crap, I had forgotten about that restoration thread. RETREAT! RETREAT!

No, but to answer Baronlando, I had read somewhere that the Special Editions for ESB and ROTJ were put together using a dupe negative. Apparently the original A/B rolls were untouched.

I wish I could find the source for that...

Unfortunately the original star wars has seen most of the abuse. A lot of what I read has shown that the original effects negatives have faded into nothing, the separation masters are incomplete, so the best source for a restoration would be an IP or dupe negative (if that even exists) or an IB print.