Buying Toned Coins & Colorful Coins

We are especially interested in purchasing Monster Toned Coins that have incredible color and are usually found in higher uncirculated grades. Toned silver coins are the most frequently encountered. Toned coins can be attractive or unattractive to a collector. As coins begin to age, the color may change. This can generally go in two ways. A coin can tarnish, in which case the coin reacts with oxygen to form silver-oxide. This usually displays as  a gray haze on the coin and typically makes a coin appear dull and dark. Over time tarnish can result in degradation of the coin itself.  Less often, a coin can tone. Back when most paper, cardboard and the rough fabrics used in coin sacks had small amounts of sulfur. Coins thus coming into contact, can form a thin surface film of silver-sulfide on the coin which results in the rainbow toning and pastel colors we all fancy. Checkout Monster Toned Morgan Silver Dollars to see examples of toned coins and for the most authoritative explanation of the physics of coin toning.