Quoted from Tsskinne:I think zitt used them on his Star Trek game if I recall
I did.
You can start reading about the nixies here:
https://pinside.com/pinball/forum/topic/star-trek-mirror-universe-pinball#post-745046
At one point; I considered going into low volume production on the nixie displays; but decided it was probably to nitchy… and sourcing volume nixies would be a long term problem.