Market Analysis: Copper spots on classic U.S. gold coins
- Published: Aug 2, 2022, 11 AM
Classic era U.S. gold coins are struck on planchets that contain 90% gold and 10% copper.
An improper mix of this alloy results in occasional copper spots seen on struck coins. These spots provide character to a coin and are a product of the minting process, though some collectors prefer coins without spots.
A 1926 American Independence Sesquicentennial commemorative $2.50 quarter eagle graded Mint State 64 by Professional Coin Grading Service has a few spots on the obverse and reverse and realized $708, with bidders responding to the nice luster in Scotsman Coin and Jewelry’s July 22 auction.
Scotsman also offered an 1891-CC Coronet gold $10 eagle graded MS-61 by PCGS that brought $3,068. The cataloger wrote on the better-date Carson City Mint issue, “Carefully detailed and somewhat lustrous, the surface shows evidence of some kind of curious greyish haziness,” adding, “Quite a number of copper spots show throughout, most of them relatively tiny.”
Connect with Coin World:
Sign up for our free eNewsletter
Access our Dealer Directory
Like us on Facebook
Follow us on Twitter
MORE RELATED ARTICLES
Paper Money Mar 19, 2023, 12 PM
Dutch firm warns of proliferation of euro counterfeiting
US Coins Mar 17, 2023, 1 PM
Week's Most Read: 2023 Morgan, Peace dollars
US Coins Mar 16, 2023, 2 PM
Market Analysis: Deja vu for this 1874-CC 50¢
World Coins Mar 16, 2023, 1 PM
Exhibition displays projection of power by the Tudor dynasty