• What is the main reference number for the work? Are there any previous reference numbers that also need to be documented?
  • If the portrait has been catalogued, what is its catalogue number? What is the full reference for the catalogue?
  • What is the accession number for the work?
  • Does it have an inventory number or numbers?
  • Is there a handlist number for the work?
  • If the portrait forms part of a discrete collection, or sub-collection, what is the collection number?