tbm3fan
Old Man with a Hat
So after I posted this I looked up DMV website and found out about the legacy plates and YOM limitations.
I successfully did YOM tags on my two 50's vehicles, although it was a PITA dealing with the DMV (as expected, though).
My car was originally from Colorado, so the white "lipstick" plates are its first pair of CA tags.
If I were to do blue plates for the '73, I think I'd first try to sneak 'em through. I'd just show up with blue plates at DMV, hope I get a good person, act dumb, just ask them to switch my registration, and see if they would do it. Of course I'd call DMV first and see if they have the number on file. If no dice, then the next option would be to get a repro plate from the ex-cons (lol) that are making them in your link above.
Generally what happens when you walk into the DMV is one of two things. Either you get a person that knows the rules or you get someone who doesn't and asks you to wait a minute while they get someone who does. Someone who does will know blue plates are not covered.
I happen to have, on my Mustang, blue plates appropriate for 1973. That's because the woman I bought it from brought it into California, from Texas, in 1973. I now have a clean set of 1968 black and yellow plates with the correct sequence for the Mustang. So I can get them put on anytime I haul my *** down there. Hasn't happened yet in 5 years. Ideally I could then switch my blue plates to the Polara but being 1973 it is not covered by the law. It lost it's blue plates after being stored awhile in the 90's and they fell out of the system forcing it to be re-registered with the new white plates. The owner at the time foolishly handed over the blue plates. When my Cougar fell out and needed the same thing I didn't bring the black plates with me and so was able to put the originals back.
I saw the Legacy Plates but the blue and gold have 7 new format digits, not the original six, therefore I was not going to sign up for the incorrect plates. They might have actually achieved 7500 plates if they had presented those plates with the original format of three numbers followed by three letters. There is a fellow in my Cougar Club who has repro black and yellow plates on his car. However, it is in the incorrect format of three numbers followed by three letters and I needle him every time I see them being one of the few who spotted it immediately.