Well, ANH's crawl was definitely re-created for the 1997 SE, as before that only the crappy-cheap-video-effects crawl of the THX-version had the "Episode IV" in it.

Empire's 1997 crawl is probably the same as in 1980, as (except from the moved Umlaut in "ZURÜCK") they look identical... funnily enough though, the German HD-broadcast (with the 2004 transfer) uses the uncorrected 1980 crawl.

And I have no idea, why Jedi's crawl of the 2004-HD-broadcasts is just an upscale... did they have an old German 35mm print of Empire, but not for Jedi?

Sadly since the 2004 DVDs all German crawls have been re-created completely, and it especially bothers me that they replaced the "Krieg der Sterne" logos with "Star Wars", so I'd like to at least have all of those in HD alongside the Blu-rays.

I can settle with the 1997 crawl for ANH (since it 1. has a German logo and 2. it's probably impossible to get the original crawl in HD), and I have the 1980 crawl of Empire in HD. Jedi is the only one missing here.

EDIT:
All right, I found a lot of info on Schnittberichte.com (ANH, TESB, ROTJ), and some interesting bits, like different "A long time ago..."-cards.

ANH:

TESB:

ROTJ:

They were all unified in the SEs to this:

It's really strange that the wording was changed for Jedi.

Also the German Jedi-SE seems to at least use the original crawl from 1983, although image geometry is changed and warped a bit (at least on the Schnittbericht-screenshots). Maybe it was recomposed for the SE using the original footage of the German crawl?

Who made the international crawls anyway? Was it ILM themselves?