The clunk going over bumps as in entering a parking lot is from a worn ball joint. The vibration most likely developed as the ball joint is now severely worn.
Wheel bearings do not usually "clunk". They whir, they click, they "wow-wow", and they grind.

That makes sense to me.
Is it safe to keep driving this thing until I get it replaced (a few weeks tops)?

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1982 240D automatic
Odometer quit at 307K...about 325K now