Read the following (written by Peter Nash, himself) and you'll understand how great he is.
Amazing how Hamilton was able to get Peter Nash in touch with his dark side, purely through analyzing his handwriting
"But from 1989 to 1995 Nash experienced the dark side of the baseball collectibles field as he discovered, with the help of his friend and world renowned handwriting expert Charles Hamilton, that close to a quarter million dollars worth of materials he’d purchased were either bogus or stolen goods. Some of the stolen items were believed to originate from the collections of the New York Public Library and the Baseball Hall of Fame in Cooperstown, NY. Over the past fifteen years, Nash has conducted his own personal investigation into the hobby, which now constitutes the backdrop for his compelling exposé on the fraud-ridden industry. In particular, Nash has succeeded in unraveling some of the hobby’s greatest mysteries involving massive thefts from the historical baseball collections housed at the New York Public Library, Boston Public Library and National Baseball Hall of Fame. "