Diane, Counterfeits exist of every type coin ever made - it is just that the fake
Trade dollars are extremely common today. The majority are made in China and distributed through many different outlets. There is at least one such major outlet in New York City. They use the internet for sales - primarily
ebay and work under dozens of names. To protect yourself attend coin shows and look at real copies of coins BEFORE you consider buying anything. Also once you target a specific coin to collect - read EVERYTHING you can about the coin and how it was made. An educated buyer is the best protection against fraud. If you have specific questions or want to get into the fine details write to me. I have been collecting and studying counterfeits since 1960. Bob Gurney