USSR era vacuum display tubes + 180 volt DC home made power supply = the beginning of a really cool clock. The time circuit will be easy DS1307 RTC has occupied all my other clocks. The big issue is an array driver that can handle 180V.
Here is a few pics of the power supply
But here is a video of the real test
I'll have more posts on this as I move forward. Next step hooking it to a PIC and counting up and down....