Hi,

Browsing the Internet I found this address http://www.arcsandsparks.com/
"PV Scientific Instruments" sales classical electric apparatus like radio
crystal , radio kits, vacuum tubes like X-ray, static machines, as well as
classic reprints.
Of course prices are not really cheap but all the device display a good size
and looks able to work...
Excellent for a small museum, to place on you shelf or as educational
material.

Good to know.

Thierry, ON4SKY
http://www.astrosurf.com/lombry/menu-qsl.htm
PS. I have no interest in this business. ;-)