Got any photos of your clocks?
Thanks for sharing. So it seems that the lack of the random scroll effect doesn't seem to make too big of a difference.
Did your tubes fail completely? Or did just some numbers within them fail? Sometimes just the single number fails due to cathode poisoning/deterioration. Sometimes the entire tube leaks gas and fails completely. Or sometimes the anode fails and the entire tube fails.
Both of the ones above are made in Germany, since the artist is in Germany. Although I don't know where the control board is made. The tubes of the Nixie Machine II are made in Czech Republic. And I don't know if the control board on the original and the sequel are the same or not, it's possible they're different control boards. Maybe the second one uses Dalibor Farney's control board.
Thanks for sharing! And great to meet another Nixie lover!