As the once normal phenomenon known as alloy mix errors began to fade with the advancement in techniques and technology we look back and explore the metallurgical breakdown of what that phenomenon is and the resulting errors that occurred because of it. Researching and understanding the why and how mint errors occur should be on the mind of any collector whether a beginner or a novice. Knowing the process in which the error is created, intentional or by mistake, is the intrigue each collector should possess. Like anything collectable in the numismatic world, fads come and go. These once discarded and underappreciated mint errors have for the time being begun to be popular and take collectors young and old to enter.... ........The Rabbit Hole.