Artist proofs are the first pieces produced for an edition, they are labelled a/p and normally represent 10% of the main edition size, so an edition of 300 will have 30 artist proofs (so 330 pieces in total), although there are exceptions to this. Traditionally the artist proofs had subtle differences worked on by the artist (however in the case of Kerry Darlington’s work the whole edition is often unique). Artist proofs are rarer than standard editions and only usually available for a new release. Artist proofs often sell at the same price as the main edition however they can demand a premium on the secondary market as they are more sought after. Many collectors like the fact they are produced first and often collectors have an all artist proof collection.