This is the key for a 64 Fury parts car. I think it is the original key.
Here is a photo of one my ignition keys. I was going to take a photo of the other one last night but I forgot when I got home. I have always assumed it was original, but I notice It does look like the trim around the star isn't as close to the edge as what I'm seeing on some of the other keys shared. I'll have to look at the others when I get home.
Here is a couple of pictures of the original keys from my 64 Belvedere Wagon.
Star key ignition,doors,and tailgate electric window. This is for a 64 fury station wagon. Round key is glove box. The spare tire optional lock might use the round key also. I have not run across one of those.
These are my keys for my 64 fury wagon. You can see the round key has a lot of unused length. I think the round key is original but don't know for sure. I can't figure out why the hex key works in the ignition and back window but not my doors. Why someone would replace only the door locks??