Also looks like this widescreen version is (maybe) a fake letterbox of the fullscreen:
Not sure though, as it could be a slightly different frame since the top of the image is missing a bit from the widescreen shot above
Also, this version that I have from Italian TV runs 1hour 24minutes, which leaves 12 minutes missing from the listed 96min runtime
This VHS cover shows a runtime of 100 min, which is even longer