Today a got an older german DVD release of the theatrical cut. The DVD is from 1998, three years befor the THX Extended Edition was avaible. It only has german audio, and is non anamorphic widescreen. Quality is not the best, but it may be interesting.

I took one cap from the THX remastered SE and the old DVD to compare-

New DVD: https://www.dropbox.com/s/q59fi8864kfdidn/vlcsnap-2014-01-07-16h02m54s250.png

Old DVD: https://www.dropbox.com/s/gzlo7ptflr4cfp8/vlcsnap-2014-01-07-16h02m58s137.png

It seem to have some slight differences in coloring...