Was there ever a "no radio installed" option?

I know I'm asking a lot of questions lately, but -

Did this piece ever come without any holes for the radio? I seem to remember my original 75 didn't have a factory radio, that this piece was solid all the way across. I could be wrong, though... memory is a fickle thing.

If there was a "no radio" option, does anyone have this piece without the holes? I have a perfectly good trim piece, clean but needs the woodgrain redone (obviously).

If such a thing never existed, what do people use to cover that section?

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