mid to late 50's GE Refrigerator door

I have a mid to late 50’s refrigerator with a dent in the door. It looks like I can pop it out fairly easily, if I can just get to it. I have removed the screws and the gasket, but there is a silver “button” in the center, holding the inside panel on.

Anyone know how to remove this “button”, and take the inside door panel off?

Thanks

Sorry cannot answer your question.

But depending on the type of dent have you tried a suction cup to pull it out.
This is how body shops do it.