Important Note!
Some of those 66 Releases are Bootlegs! Andreas Bethmann (Head of X-Rated) once stated that those have been fabricated from original DVDs (leftovers) but that the packaging has neither been made nor distributed by X-Rated.
I'm sorry to tell you that, but this Oasis DVD seems to be NOT legit.
Source:
OFDb - Fassung zu Oase der gefangenen Frauen (1981)
There are some more but I'm sorry I can't remember the titles.
EDIT: Just found one more ... MONDO CANE:
http://www.ofdb.de/view.php?page=fas...406&vid=205020
So basically, it seems to be official DVDs in a bootleg packaging because someone used the X-Rated label and logo without permission.
Disclaimer: I do not want to accuse anyone of bootlegging - this post is created from credible-looking information found on the Internet (posted by X-Rated themselves!)