how do I keep my original number plates QLD

[stevodude]

as title says,

I'm de-registering my XA falcon, so I can do some work on it over the next couple of years, but I want to alto keep the original plates, so when I go to register it, put the plates back on.
These are the original 32yr old plates that where on the vehicle since new, (black background with white letters/numbers) - removable letters.

do I have to purchase them as a custom numberplate? or what...