[R-390] Unfamiliar R-390 variant on ebay overnight

[Jacques Fortin]

I do not believe that it is a "variant".
It is either an early prototype, or a "standard" R-390 with a replacement
front panel made by someone.
Despite the IF and RF decks looks like the first variants made, more clues
could be provided by seeing what the PTO, PSU and Audio/Regulator modules
looks like.
See that there is no Line level controls in the front panel.
Is there Line Amp stages in the Audio deck ?

73, Jacques, VE2JFE