Low single number plates go for ridiculous money here - "2" changed hands (with the ar that it was on, the only way you could sell them then) for several million. The father of a fellow woodwork student 20+ years ago inherited a car with the plate "1", which had belonged at one time to the founding chairman of Trans Australian Airlines. He lived in a different state, and to keep the registration, he had to have the car registered in NSW, but, as a continuation of his good fortune, he was already in the process of moving.
At one time I used to see a car locally with the plate RSM --- (can't remember the numbers) and wondered if the driver was in fact an RSM, as the letters weren't in the normal sequence. Now, in the same area where that car was usually heading, there is often one parked with the plate 2 RAR (2nd Bn, Royal Australian Regiment), so I wonder if it belongs to the same person.