See if you can tell which one of the knobs isn't original.
(And no, William, you can't take them off and check the backs.)

The resolution of the photo of the black knobs isn't good enough to decide.

Of the white knobs, the main tuning knob isn't original, because the
original didn't have "slots" in the rim.

Frankly, they all look unoriginal, simply because they look too clean and
too good!