RARE At the time of this writing, the most expensive coin in the world, is a 1794-1795 silver dollar coin made of 90% silver and 10% copper. It is named "Flowing Hair", because of the stamped image of the head of "Liberty", with her hair flowing down the back of her neck, and valued at $10 million. What makes it valuable, is that it was the first U.S. silver dollar ever minted, and it is very rare. VALUABLE The most valuable comic book in the world is the original Action Comi