’87 5th Avenue arm rest too loose! Parts missing.

The driver's side arm rest was like this when I bought the car last November. It has pulled away from the door panel over time. It looks like there are three missing screws/bolts/fasteners of some sort that hold the armrest to the door panel from the inside. Any ideas what I need? What are the missing pieces called and where can I get some? Thoughts?

Glenn

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Author: 53ryder