The U.S. Mint has issued many interesting and rare quarter coins over the years. You probably have some in your pocket or nightstand right now. Yes, they used to be handy for pinball and jukeboxes in simpler times, but quarters can also be valuable especially error coins like the recent Wisconsin extra leaf quarter. Check out great deals on U.S. quarters including those sought after silver pre-1964 Washingtons. Every coin collector should have one good example of each of these quarters.