Single-digit number plates are one of the ultimate expressions of wealth. How else could you multiply the value of your car almost endlessly?

The NSW number plate bearing the digit ‘4’ for example, just became a good way to add a whopping $2.45 million more to the value of your treasured vehicle.

At Shannons Sydney Winter Classic Auction, a Sydney investor (reported by sister publication Wheels to be sex-toy magnate Peter Tseng) purchased the single-digit plate to go with the number ‘2’ adorning his Ferrari 458 Italia.

1972 Holden LJ Torana GTR XU sedan

Amongst the cars he would have been purchasing were some Aussie legends, a few Euro classics, and some historical US metal.

Ford Falcon XWGTHO

At the same time, if the number plate continues to grow in value as quickly as it has, he could buy pretty much anything he wants with the money he eventually sells it for.

Ford Falcon XYGT

That’s almost enough to buy half of a small studio apartment on Sydney’s waterfront!