To my pleasant surprise I just found a set of original keys to my 67, and they have the "knockouts" intact with #'s which match the #'s on the side of the locks.(I currently have all locks out of the car as I'm mid-restoration) I also tried the keys, and they work. I have a question though, is it possible to have them re-silvered? And if so, what kind of plating would it be? The keys are in good shape but some of the plating has worn off through use. I thought I would get them replated, and then try to find a key envelope to put them in and not use them, just as a Glove Box item. Attaching a pic..