Japan…
Some info on Star Wars video tape releases in Japan - at projectcclarke’s informative ‘Star Wars On Home Video’ reference site:-
http://www.starwarshomevideo.com/search/label/Japan
There does not appear to have been an Original Trilogy box set release on home video before 1997 in Japan - though if anyone knows differently please post up some images and information - thank you.
There were indeed individual film releases - and also ‘set releases’ before 1997 (as pictured below; from both 1990 & 1995) - though seemingly no ‘box set’ releases…
1990:-
1995 - Widescreen:-
1995 - Fullscreen:-
1997
A couple of video reviews for the 1997 Original Trilogy releases…
‘JAPANESE VHS STAR WARS SPECIAL EDITION TRIOLOGY REVIEW PART 1’:-
https://www.youtube.com/watch?v=kyDkzsokDNU - a 22 minute video on the DZTV youtube channel
‘JAPANESE VHS STAR WARS SPECIAL EDITION TRIOLOGY REVIEW PART 2’:-
https://www.youtube.com/watch?v=Ex3ahWpFDG8 - a 23 minute video on the DZTV youtube channel
2000
‘From the Star Wars Home Video Library #355: Japanese Dubbed FS Original Trilogy VHS (2000)’:-
https://www.youtube.com/watch?v=jO0F5tj2gQA - a 5 minute video from the Nathan Butler youtube channel