This is can be a lithograph, serigraph, etching, or giclee in which the artist determines the number to be printed and oversees the printing process.  Once the artwork meets the artist’s standards, the pieces are signed and numbered.  When an edition is sold out, it is no longer available.  All Limited Edition artworks from www.tirageartwarehouse.com have a Certificate of Authenticity which includes the name of the piece, artist, publisher and edition number, along with information on the artist.