Eric, thanks for your comments. I'm pleased I have added something new, even more so if others appreciate them.
Joerg, I made this enquiry through fellow member Roy Boardman when he was visiting some friends from the Leipzig Society a few months ago. They have the old Gottstein moulds. Apparently the moulds have not yet been inspected, I got the impression they were not high on the list and so it appears that some considerable time will elapse before we know anything more. I will say that I have the set, they are wonderfully lively figures but have considerable error in uniform details etc.