Got this set of plates off a 62 Chrysler at a junkyard. Oddly enough I believe there from the same dealership that one of my 61 Furies came from. Also got this 413 black ca plate.
The set is going on my 61 ply.
Therein lies the problem, although these plates were originally issued to a 61 (in 63) they cannot be reassigned to a 61 in 2020. The YOM program requires a 61 to have 56 plates with 61 sticker. The only way you can have Black 63 plates on a pre 63 car is if they were originally issued to that specific car in 1963 (through 1969).
The Black 63 plates are only available for 63-69 car in the YOM program.