This was quickly determined to not be actual legit cover art for "Sweet Insanity." Its original source is a book called "The Greatest Albums You'll Never Hear": https://www.amazon.com/Greatest-Albums-Youll-Never-Hear/dp/1844037770 It's a book about unreleased albums, and for whatever reason (whether legal or artistic), the book commissioned newly-created fan art for most or all of the albums in question. This included "Sweet Insanity." Now, apparently, for whatever reason, someone was really into this cover art but only had a picture of the inside of the book rather than an actual scan of it, and thus then made their own custom re-creation. So what is seen above is a fan-made custom re-creation of a custom, non-legit newly-created cover for the album.