I have for sale digital numitron clock using single tube. This is my own design and performance. PCB is well made and tinned. All elements are brand-new, also the tube (NOS). There are two switches to set hour and minute. The time is displayed in a sequence digit by digit. All details you can see on movie and pictures.
Price: 35 USD
Shipping worldwide up to 7 working days.
This is only hobby design, so I can't give you a guarantee.
If you are interested please contact me on PM.