I finally gave into the urge to use some of my Nixie tubes and build a clock. That was ok, but I also thought it might be cool to incorporate a couple of my Dekatrons as the seconds indicators. The tube collections are in a pair of Exide battery jars about 10" X 8" X 24". I pulled down the one jar and set the top on my file folder collection. As I was looking up pinouts, the top slid off and smashed on the floor. The lead data plate gives a date of 1936. Just to make it feel worse, the Dekatrons are pretty black on top, so they aren't likely to last in use.