1968 Dodge Dart GT Sleeping Beauty?

hcallaway said
C21 is Dec 07 of 1967? Is that correct

C = December
21 = 21 day in December

If your asking about a 67 model year then December, 21 1966

If your asking about a 68 model year then December, 21 1967

BUT...

fender tag shows C07 = December, 7 (Pearl Harbor Day)