MOVIE PROP PLATES These are fake license plates used for TV shows and movies - usually they don't match any valid number sequence so they don't mimic any "real" plates.
But sometimes, they "miss" and the numbers are valid.
 

1959 BASEJ. Mattes
New Jersey License Plate Movie Prop

1959 BASEplates.2gat123.com
New Jersey License Plate Movie Prop

1979 BASE - MUNICIPAL
New Jersey License Plate Movie Prop

1979 BASE
New Jersey License Plate Movie Prop

1979 BASEplates.2gat123.com
New Jersey License Plate Movie Prop

1979 BASEplates.2gat123.com
Inverted NJ map
New Jersey License Plate Movie Prop

1979 BASE - COMMERCIAL
New Jersey License Plate Movie Prop

Plastic Cast of 1985 plate
New Jersey License Plate Movie Prop

1992 BASE - MUNICIPAL
New Jersey License Plate Movie Prop

1992 BASEand a valid number
New Jersey License Plate Movie Prop