Yep, they do exist.
But there are two different software houses who made them.
the first one was published by Walnut Creek CD-ROM.
I had that one for my self, years ago.
Schatztruhe published the rest of the Aminet cd's.
Cd 1 is not a jewelcase but a plastic box such as the Eurocd's.
Search is narrowed down to disc 1 ONLY !! Managed to find disc 2, anyone here that can help out with disc 1? It will complete my collection of 52 CD's !
BTW: Aminet 2 is actually not a Schatzruhe CD but also from Walnut Creek! Black cover with red box and yellow letters, date is February/March 1994. Checked the Aminet Wiki: the content of this disc matches to what's listed there.