The history (provenance) of an artwork or antique plays a large part in value. Verifying its accuracy is critical.
https://www.nbcnewyork.com/news/local/crime-and-courts/nyc-antiques-dealers-allegedly-made-up-fake-histories-of-art-they-sold-defrauded-buyers/2631180/?fbclid=IwAR16a-9rr8X_2yDeHnWko-KstI0nBopYo1J6Lz_S0PRXGlUcLI1sOWmijNs