These are actually officially released DVDs I'm pretty sure. Cool-lookin', though!
Nope, definitely not officially released. ADV Films only ever released the DiC Dub across 14 DVD volumes. These bootlegs I bought take the same aesthetics from said DVD Volumes and combines them into 4 DVD volumes instead of 14.https://www.smuncensored.com/coverart.php?id=4
Unless these volumes were intended to be released but never were officially and have recently been discovered by a third party, I'm convinced these are just very well crafted bootlegs that had a lot of work put into them.