In the visual arts, a signature is a token of authorship recorded on a work. It is a written indication of the identity of the creator of the work – full or abbreviated name or a monogram, occasionally also an individual symbol; it may be supplemented with information about the person of the artist, the commissioner, or the genesis of the work. Until the 18th century, the signature was frequently expanded by addition of a verb denoting the production process: Latin fecit, faciebat, complevit, inveni…