Seeing nixies brings waves of nostalgia for me. My father was an EE and worked for National Electronics in the 60's, was always working on the nixie production machinery, brought home boxes of functional rejects to play with. My first job out of school in the late 70's was repairing moisture testers that had nixies in them, all replacement nixies by then had pins that were non-solderable, needed to acid tin them first, what a PIA.