Because less is more, there’s nothing quite as sophisticated as simplicity.  2 character number plates are limited in numbers and valuable in their own right but also far more common than single character plates. Given the much larger pool of combinations, they would still be considered to be relatively rare. One of the major attractions of two letter number plates is that they can represent the owners initials.  2 character plates retail for more than most plates sold by the department of transport in each state.