Just wanted to bring up that really cool California Black Plate list that you posted a while back with a question about it and the movie Bullett.
Now looking at the list Frankie's Mustang was "JJZ" and that puts it in Glendale. Today that is a movie making area, but not sure about 1968 era. But the question is the Charger's plate was "RDR" and that is not on your list. Does this person that provided the list in the first plate have the rest of the list "RDB" to "ZZZ"? Or can you ask about "RDR"?
fd
Now looking at the list Frankie's Mustang was "JJZ" and that puts it in Glendale. Today that is a movie making area, but not sure about 1968 era. But the question is the Charger's plate was "RDR" and that is not on your list. Does this person that provided the list in the first plate have the rest of the list "RDB" to "ZZZ"? Or can you ask about "RDR"?

fd