Trial Proofs
The trial proofs are the most valuable proofs and do not form part of the edition. These proofs are used by the artist while he or she is conceptualising the artwork and therefore show us the step by step how the print was created. The artist may have tried to see how the artwork would look with a different color combination or added to the composition and printed it to see how it would look. Then they may have made final modifications based on this before declaring the matrix finished. These prints are the most highly valued and sort after by collectors.