Does anyone of you know if Norbert Lösche ever did any other tarot deck than "Cosmic Tarot"? I have looked around at different places but have not found any information.
No, I don't think he did. He painted mandalas at some point, but I don't know where he's now and what he's doing. I'm quite sure I would have heard in the German "tarot scene" if he did another deck.
There were in the early 2000s some hints that Lösche was working with esoteric author Werner Bogun on a new deck but it seems that their cooperation was limited to illustrations for Bogun's work.