68/9 dart door panel emblems

I have the pair of these. Still attached to door panels. Looks like they spun the rivets (posts) to attach them. I am not sure how to remove them from the panel and save the posts. Any ideas?

View attachment 1716116742

I have no idea how to remove them? There is probably a little mounting screw nut on the back of the door card where the emblem goes through?