and a reproduction, but unfortunately the picture is on my home computer in Tulsa and I'm using a laptop in Houston.
The striking difference is the width of the area where you would insert the key onto a key chain. So the pictures of the key laying on it's side may not tell you much. If you take a picture of the back of the key (looking down the length of the key) and have someone with an orignal take a picture of their key you would see a difference in the width of the area you would insert on to a key chain. The original will be wider.