I'm thinking it is part of the adjusting mechanism.
I can see what looks like a rod that is free to move within a channel at the bottom of the headlight bucket. It looks like there may have been a rubber bushing or something similar that takes up the extra space to prevent the movement.
I guess the next step is to try to find some parts to fix it.
Thanks for the help.

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Darrell

1984 300SD "Ole Girl"
207K