Learned a New Brake Term Today

Update: I raked the yard three times, going perpendicular to the previous raking each time. Looked around everywhere, even in the street out front and no sign of the anchor pin plate. Now resigned to fabricate one, I squatted down to the rear passenger side 9 inch brake assembly to remove the sample plate. What I found is the plate was missing on that side, now leading me to believe that both sides were missing all this time.

I have never seen a drum brake assembly without having these plates installed. I'm 99% percent sure they were factory installed.

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