I reproduced these headlight pivot backing plates from laser cut mild steel. They are yellow zinc plated Like the originals. I have about 10 sets plated. I can do them on black powder coat which is not original but is a more durable finish.
A set is enough for one car. Two three hole and two 2 hole plates.
These are usually bent ,rusted and covered with under coating.
$25 a set shipped in the U.S.
Bruce