vanity plates
here are some I've seen that were not purposely-ordered "vanity" plates :
SHT 666 ( 1966 GTO )
666 DVL ( 1971 Road Runner )
WDG 340 ( 1968 340 GTS Dart !! )
WON 383 ( 1967 GTS Dart ! )
All of these are California-state-issued plates . No's 1,3 and4 are black with yellow characters ; this style , sequence and colour ran from 1963 - 31.12.69 in Ca. ; No 2 is blue with yellow characters ; "D" = 1971-issue .
First year for personalised plates in Ca was 1970 , when the plates changed colours to blue w/yellow characters . These used to be quite a bit of largesse when it came to choice-of-vanity ; just look at the plate that was on the '64 Impala in Cheech & Chong
( later , in finished form , "Gypsy Rose" ) : "MUFDIVR" = Muff Diver . 100% legit !!
Anyone whom wishes to garner more info regarding Ca plates from the "golden era" , please p.m. me :-)