How Did This Happen? Bent Speedo Needle and Broken Cable

When I got my 66 300 the speedo was stuck on 53 mph.
I decided to look at that today.
The needle was bent and as unable to move.
You can see where it abraded the backing past 110 until the end
The cable was broken off in the transmission pinion.
Even after straightening it as best I could it was nowhere near 0 MPH at rest.
I straightened the needle an reclocked it.
We'll see if it's accurate when I get a new cable.
Can anyone conceive of any way this could have happened?
I have buried...

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