<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
What are some things that art collectors look for when it comes to counterfeiting?
<|assistant|>
Collectors look for tell-tale signs that can indicate the work was produced from a copied canvas, such as inexpert brush strokes, overt evidence of alterations, and variations in surface quality and painting medium. They also examine the quality of the material used and compare it to the original, checking for differences in style and subject matter. Furthermore, many collectors employ the services of forensic experts to detect potential duplications.