"First off, I have to say that the delivery from Ukraine was faster than light! I'm blown away. That being said, there have been a couple issues. First one occurred within a couple days of receipt - a couple of the digits in one of the tubes would not light or would take hours to illuminate. I swapped that tube (the hours tube) with the tens of hours tube which worked for a few days. Then the 2 would not illuminate at all. I bought a set of tubes off of eBay which solved that problem. The current issue that only just started is the dying of the decatron. Right now, I don't know if the tube itself died or the fit in the PCB has gone south. THESE TUBES ARE NOT ACTUALLY SOCKETED IN THE TRUE SENSE OF THE MEANING. The nixie tubes fit into female PCB-mount D-sub contacts that have been soldered to the board..."
Nixie Clock In-4 Dekatron OG-4 Nixie Tube In-4 Gift for Her, Business gift, Neon Sign, Nixie Uhr