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Yearbook of Experts® member profiles
Art Certification Experts
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About: Mark Winter is a seasoned art certification expert, fine art appraiser, and expert witness, with over two decades of experience in the global art market. A former associate at Sothebys.com and a senior specialist at Art Authentication Experts, Inc. Since 2003, he has worked on cases spanning authentication, attribution, appraisal, and the investigation of forgery, theft, and rediscovery. Mark and his team regularly collaborate with journalists and media across print, digital, radio, and film, providing expert insight into art authentication, attribution, and market trends. Their commentary has been featured in investigative reports, documentaries, news segments, and podcasts worldwide. Offering rapid fact verification (often within 24–48 hours) and multilingual interviews in 21 languages, Mark and his team support timely stories with accuracy and depth.
Grady Harp -- Top 100 Amazon Book Reviewer
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About: Dr. Grady Harp is a man of many pursuits. Having careers as a doctor, a conductor, a producer and critic of music, an art exhibition advisor, a writer, and most recently a book reviewer, Harp has worn multiple different hats throughout his life. Harp’s passions and gained knowledge have earned him a highly respected status in many fields and much success. At this point in his life, Harp has bec...
 

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09/25/2025
Art Certification Experts
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08/21/2025
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Art Certification Experts
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Grady Harp -- Top 100 Amazon Book Reviewer

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06/23/2025
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