I've never seen that woodgrain or filler before either. I suspect that filler was a transitional "fix" when they were gearing up for the '70 model year. As I’m sure you know, the ignition switch moved to the column in '70. The larger column diameter meant changes for the dash bezels and deluxe wood trim panel. I think you have some type of experiment they were trying during the transition. It appears to be a ’69 bezel opened up to fit the larger ‘70 column, then later modified with the filler to go back and be used on a ’69 column.
I can offer some input on the colors too. I have a collection of '69 & '70 woodgrain trim panels and plan to re-laminate them and offer a core exchange service. I’ve done a great deal of research in this regard. I'm about there... but back to the topic – laminate color.
Generally "walnut" panels had more orange-red in them when new than most believe. They are now often seen with UV damage, the red pigment being the first to fade. Often base colors have faded to become anywhere from a dull yellowish ochre to coffee w extra cream. Pristine examples I own and have seen retain orange-red and orange-brown hues. I've removed the name plate on many sun damaged clock panels to reveal these original colors as well. Also, there was definitely color variance in the walnut material used at the factory. I have a perfect match for teak, (which has orange-red in it too), and a very close walnut laminate with the orange-red. The walnut is tricky for me though - Do I offer people what looks right today, or what more closely matches the undamaged original material. (Perhaps both) The laminate on your panel is unlike any I’ve seen before. Another indication you have an experimental cluster!
Edited – To try and not be insulting to those that knew this already. I have much respect for the experts here!
