Nixies were made in Ukraine until May 1992 (that's the latest datecode I have ever seen). They made it for so long because: a) the planned economy did not change anything that was functional and well established b) the Soviet LED-Technology was many years behind western technology (as almost any technology was) c) production cost was not an issue (they had to have 100% employment rate) d) in the 80ies and early 90ies their economy was so much run down that they were widely unable to get new things started
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