I go metal detecting quite frequently, and I must say, the first picture of the quarter that's brown look's like it spent a couple years underground at a park. Or some place that has dirt that is watered or wet frequently, it always seems to stain the coins. And when the coin spends about 25 years or more underground, in a wet enviroment, they literally turn orange/red! The three pictures I'm posting show a very small timeline of how they color out when under wet/moist ground. The Alaska one resembles a perfect park coin, as for the Georgia quarter, It's starting to show some of the red/orange. The 1980 Washington Quarter shows a good amount of the coloring. Hope this helps a little or just is fun to look at? :thumb:
