Restoring the original doors will require some surgery. We'll have to reconfigure the existing front door frame (see photo below) and recreate the shallow arch that crowns the doors in historic views of the house. (As in the drawing here.)
When were the fancy double doors replaced with a single, plain one? And why?
Whatever the answer, we are grateful that the magnificent originals weren't tossed. And that the basement stays dry, so as to preserve them.