One of my favorite things to do in my free time is sort rolls of coins. I love to look for W quarters, old dates, and anything special. But what I really love to look for is errors. My favorite reference book for them is a book called Strike It Rich with Pocket Change. I'm sure some of you are familiar with this book because it is one of my favorite coin collecting books. It talks about a lot of major and minor errors on modern circulating coins. It will tell you where to look on the coin and what to look for. It will give you an estimated price range on your coin in circulated condition and uncirculated condition. It ranges from cents to half dollars and includes zoomed in photos with captions. The title on the box says "Mistakes happen. Now you can cash in on them." Ken Potter and Dr. Brian Allen did a great job with this book. If you are into errors and like to roll sort, I would highly recommend this book!