This is a little odd, but I thought I'd post it anyways. "Nixie" tubes were vacuum tubes that contained filaments in the shape of each of the 10 numerals (0-9), and were used to produce digital displays prior to the advent of LED technology. I had an old (~1950's) piece of electronics test equipment that contained 7 of these tubes, but was otherwise no longer useful, so I salvaged the tubes and built this clock.
These tubes are typically mounted facing "up", but the particular ones I had face "down" (pins on the top), so I had to build a cantilevered box to hold them. The box is sweet gum wood, with amber shellac finish.