Nixie-clock using neon lamps as logic elements (2007) - https://news.ycombinator.com/item?id=27956488 - July 2021 (2 comments)
Nixie-clock using neon lamps as logic elements (2007) - https://news.ycombinator.com/item?id=16549144 - March 2018 (16 comments)
Hah, good one, I should have known it probably had been posted before.