Bit of a long shot but here goes, have been looking for one of these timepieces since I first saw it in the Stein Dinse catalogue of 1997 /98, I maybe misinformed but I understand they were originally manufactured solely for the German market. Grateful for any help / advice in tracking either one down that might be available.
I know it sounds obvious but have you tried Watch Finder as a start? (phoning them i mean not looking on their website) They must be able to put you in touch with someone who can help.