Be on the lookout for coins that are special because of their beautiful colors, or toning, sometimes referred to by non-numismatists as tarnish. Original, beautifully toned coins exhibiting various vibrant colors are treasured by most collectors in every series.
Toning that is not artificial is often considered a positive factor by graders at the leading professional grading services. Coins can become toned in several ways, such as when they come into contact with gases or materials when stored. Surface changes on a coin can occur as a chemical reaction with oxygen, sulfur and other elements. Many times, original toning occurs when moisture, a catalyst, reacts with a coin's surface.
Often, the most beautifully toned coins are silver coins, due to their lighter original "canvas" on which the colors appear, although gold, copper and nickel coins have been known to exhibit attractive toning. Silver toning shapes and patterns are determined by a number of factors.
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What Are Semi-Numismatic Coins?
COINS WORTH MORE THAN THEIR WEIGHT IN GOLD
Charles C. Anderson, Sr.
NUMISMATIST OF THE CENTURY
COINS WITH MAGNIFICENT COLORS
GUIDE TO ORIGINAL TONING
John West Dannreuther
NUMISMATIST OF THE CENTURY
Today's News is Tomorrow's Coinage
COINS AS HISTORY IN YOUR HANDS
David Hall's Greatest Idea?
REGISTRY SET CONCEPT EXPANDS COLLECTING
Kagin, McCarthy SWEEP CONTEST
NUMISMATIC LITERARY GUILD TOP 2 BOOK PRIZES AWARDED
GOLD COINS IN DEMAND
FEVERISH BUYING AT $2,500 AN OUNCE
Stack's Bowers Appoints John Kraljevich as Director of Numismatic Americana
Stack's Bowers Galleries announced the appointment of John Kraljevich, COINage numismatist of the century, to the newly created position of director of numismatic Americana. Kraljevich, proprietor of John Kraljevich Americana since 2007, has been recognized time and again for his scholarship, expertise and leadership.
How the U.S. Dollar Began
THE SPANISH MILLED DOLLAR (8 REALES COIN) WAS THE BASIS FOR THE U.S. SILVER DOLLAR