How do you authedicate Salvador Dali?

To authenticate a Salvador Dalí artwork, experts typically evaluate several key factors, including provenance, documentation, and expert opinions. They examine the artwork's signature, style, and technique, comparing it to known authentic works. Additionally, scientific methods such as pigment analysis and infrared reflectography may be employed to assess the materials and techniques used. Finally, consultation with reputable authentication boards or experts in Dalí's work is often crucial for a definitive assessment.