A limited edition refers to the limited number of copies of an original masterpiece which the artist or the photographer decides to release. The simplicity of the digital printing opens new possibilities for the reproduction, and makes the control over it - therefore the market price - even more difficult.
A limited edition must always be fitted with the serial number, the title of the work and the signature of the artist or the photographer. Best practices also include a certificate of authenticity designed and signed by the author.
For art reproduction, the certificate must compulsorily mention the printing technique, the printer brand and type, the ink jet technique, and the paper name and brand. Editors or professional printing labs also often use a dry stamp to certify the print.