@ First Ninja
I've had similar luck in finding what the original 3.0 retail version looked like. I think I mentioned above that I've only ever seen one other copy, on eBay at least five years ago, probably much longer. That low-res image is indeed the front, and the back looks similar to Schatztruhe's other CD-ROM releases, e.g., the Aminet CDs. Almost certainly the same designer.
I suspect it shipped as jewel case only, with no outer box or printed docs, like the Aminet CDs, and in keeping with the minimalist style of v2.0.