These are currently NSW Centenary Of Federation plates, however you can have them remade into any plate style you like from NSW- My plates. I believe an annual fee of $109 would apply and a one off transfer fee of $96. But you should check details with the RMS yourself.
Condition of plates is fair as they have a few holes from different vehicles. Still if you are a JD and you have a car from 1966, these are a cool plate. Maybe you were born is 1966?
Plates are currently held by RMS in Sydney Inner West.