There are a number of advantages to creating a register of these items:

• Each collection has a catalogue, ensuring that the information is not lost.
• Provision is made for bequeathing the collection to family, friends or to an institution.
• Professionals who ratify these collections can advise and aid the owner.
• The collections become legal.
• Important information held in these collections becomes part of the shared national estate.

The registration process does not affect the ownership of the registered collections, which remain the property of the owner. This registration of private collections ensures that the information about them is not lost to future generations.

• all collections of archaeological artefacts, including artefacts older than 100 years, rock paintings or rock engravings, artefacts that have been excavated or collected from sites associated military history older than 75 years, and artefacts associated with ships and other wrecks older than 60 years.
• all collections of fossils and other palaeontological material (including trace fossils such as ancient footprints).
• all collections of meteorites.