wrote:

On the web, Oudin Devices

I looked and I saw, www.museumofquackery.com/devices/uv.htm

Third picture down, that large pencil/crayon looking thingy looks just
like the device I have.
cuhulin, the quack

I remember the same one. We had the whole collection of tubes and
snazzy case. In addition to the discharge tubes, there was a tubular
metal wand that could be plugged into the spark coil. Produced
quite a jolt.

I suppose it's too late to join in the class action suit.