Prints are multiple originals, members of an edition. In analogy with music, the engraved metal plate is like a score, each print is an interpretation of this score, of the etched plate.
Each print is a part of an edition, a set of numbered and signed prints from the same matrix. By tradition, the print number is limited by the divisor of the number found below the lower left center of the image, plus 10% artist's proofs. Prints' colours vary by interpretation, often an edition contains variants, here named versions, that are not object of a separate numbering. Sometimes also different prints are printed on the same paper, to create a composite, itself available in different versions, again these prints are not objects of a separate numbering.