Call the Smithsonian, tell them you think you have the second commercial ion laser off the production line ran by the inventor of the ion laser. That head is Serial number 0002.
I'm not joking. There were only a handful of those made.
You have a duty to get that into a museum.
I doubt it will run,its more valuable as what it is, as is, then as a working laser. The variac based power supply will NOT run a modern tube.
The design lifetime was 500 hours, at 365 its kaput.
Steve
Qui habet Christos, habet Vitam!
I should have rented the space under my name for advertising.
When I still could have...