Artist's proof

Print intended for the artist's
personal use. It is a common practice to reserve
approximately ten percent of an edition as artist's
proofs, although this figure can be higher. The artist's
proof is sometimes referred to by its French name,
epreuve d'artist (abbreviated E.A.). Artist's proofs
can be distinguished by the abbreviation AP or E.A.,
commonly on the lower left corner of the work.

Also known as A/P. Prints outside the edition that are equal in quality to the edition and signed as Artist Proof or A/P. They are traditionally the property of the artist and usually limited to 10% of the edition.