That explains that.
Interestingly, this whole project of mine started when I wanted to make DVD covers in the same style as the VHS tapes I grew up with. But after looking at these scans and starting on the CBS/FOX style covers, I think all 3 of my VHS tapes were in the style of your FOX ROTJ box!
I'm continuing work on the CBS/FOX style, but if anyone has scans of the ANH/ESB FOX style (like EyeShotFirst's ROTJ scan), that would be fantastic to have as well.