The signature the artist appends to a work of art increases its value, as does the numbering of a print run. at best, five percent of Chagall's original graphic art has been signed and numbered.
Because some art buyers only consider a work of art to be complete if it carries a signature and a number, an invented number or false signature is frequently encountered on an original piece by
Chagall. Our research department is able to establish with reasonable certainty whether or not a work of art by Chagall was originally released with a signature or a number. We can also determine
in most cases whether a signature is false or the numbering is incorrect. our fee for this is hundred euros per investigation. We will send you a written declaration of our findings.