Queen & Co Arc Lamp
This lamp is probably a combination of two or three lamps.  The optics and holders appear to be of the same manufacture, the lamp itself seems more modern, and the base is potentially homemade.
The left knob adjusts the verticle height of the electrode and the right adjusts the horizontal electrode.

The arc is visible on a sheet of mica which is in front of a pinhole.  Note the inverted image.


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