AMG69 purchased the personal number plates on my 6.9 - UMB690 - and I purchased them off him when I purchased the car.
There were a couple of issues with the plates which caused some difficulties with the transfer of ownership - the biggest was that an unregistered and encumbered Holden Station Wagon in South Australia shared the same Rego Number and had somehow locked itself into the REVS Computer as my car.
My rego papers also give the number as UMB690 but at the bottom they are...