The G500 knobs does not come with G-shield knobs like the Tamarack/Aspen/Sequoia - the ones in the pic are correct. They are also notorious for losing the little brown caps on top which you can see on the left-most knob. They are unobtanium, too.Is the amp missing knobs or are the "proper" knobs gold rather than black?
And what is that device on the table? It looks like a hand cranked light circa 1900.
It would not surprise me if that picture was carefully staged.