I've checked the old documentaries "Classic Creatures" and "From Star Wars to Jedi" for the original theatrical font, but unfortunately it was the old home video font in those clips, so if anyone knows were they may show up or be obtainable from, it would be great for re-creation.

Anyway, I always thought that Jedi used a slightly different font than Star Wars but the pics above shows that they used the same, albeit a little taller, which makes font comparison a lot easier as the Jedi are in better quality!

The best match I've got is TradeGothic Bold, which is damn close. Another one is AlternateGotNo3D, but you must change the height and width etc. for them to fit. Any suggestions are welcomed, IMO the subtitles are as much a part of the films as the opening Crawl.