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Question
i have a sacagawea coin and it has a blue sheen to it. it has beatiful luster. i have had it for over 2 yrs, when i got it it was blue. i was wondering what can cause this. the rim of the coin has no discoloration and the discoloration is evenly displayed over the rest of the coin. would really appreciate any suggestions. thanx again
Hi Lalli,
It sounds like your coin toned over time possibly because of the holder or storage it was placed in. It could be natural toning and it could be aritificial which happens when gas or some type of sulfer was added to the surface to speed up the color progression. The only way to know is to see the coin.
Cameron Kiefer
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Answers by Expert:
Cameron Kiefer
Expertise
I can answer questions relating to copper, silver and gold coins of the United States.
Experience
I have been a collector for many years, and a dealer at shows. I have written many essay's and Money Talk Scripts for the American Numismatic Association and have attended five Summer Seminars at their headquarters in Colorado Springs, CO.
Organizations
American Numismatic Association (Life member)
California State Numismatic association
Western Wooden money club
Visalia Coin Club
Franklin Collectors Club and many more!
Publications
Coin World
Numismatic News
CSNA Newsletter
Education/Credentials
College
Awards and Honors
. 2001 CSNA Literary award. 2002 ANA Outstanding Young Numismatist of the Year winnner.
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