At the truck show in Winchester this weekend, I noticed (and was shown) the color/finish of/on the firewall sides filler panels on several trucks.

My three 1954 trucks were unfinished perhaps-galvanized steel. I obtained my 1954 Suburban in 1971, and the engine compartment had not been repainted. The 1953 truck's image below looks non-painted.

However, several earlier-years A-D trucks at the show had black (flat or semi-gloss black) filler panels. Some of those owners are certain that the black is the original color.

What have other members found on their trucks?
And, do you think the color of the plates is original?

My uninformed/unsupported guess is that there might have been a change over the years?

Thanks (I know that discussing this detail is "nit-picking" - dang those nits)
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