The Fine Things are Always Hand Made
Those pair of twist tubes at the right front of the receiver are voltage regulator tubes. Each is a 75 volt neon regulator. They are NE-42's. They are wired in series, to reduce the voltage fed to the oscillator plate to a constant 150 volts. After the radio is on a few seconds they should produce a fairly bright orange glow. If they glow, they should be OK.