NCS Conservation Showcase: 1927 $20 Gold Coin

Posted on 3/12/2013

Read about a recent submission to the NCS conservation laboratory.

NCS Conservation Showcase NCS Conservation Showcase
click to enlarge click to enlarge
NCS Conservation Showcase NCS Conservation Showcase

It is not uncommon for classic gold coins to develop small reddish spots. In numismatic circles these kinds of spots are frequently known as copper spots or gold spots. Their presence is common though will certainly hurt a coin’s eye appeal. This 1927 St. Gaudens $20 was recently submitted to NCS to have the unattractive red spots removed from an otherwise gorgeous example of the type.

Removing spots from gold coins requires careful work to eliminate the appearance of the red yet disturb the surface of the coin as little as possible. A coin with a greater number of spots presents a greater challenge. This particular $20 was able to have the spots skillfully removed while retaining the look of the piece. Once again, this St. Gaudens is beautiful. After conservation this coin was able to grade very well with NGC.

NCS is an independent member of the Certified Collectibles Group.

Return to the Articles List

  • Global Locations
  • Germany
  • Switzerland
  • Singapore
  • China
  • Hong Kong
  • Taiwan
  • South Korea
  • Global locations map
  • Contact Us
  • NCS
    P.O. Box 4750
    Sarasota, FL 34230
  • 1-866-NCS-COIN toll free
    +1 941-360-3996
    +1 941-360-2559 fax
  • Hong Kong
    Tsim Sha Tsui, Kowloon
    Hong Kong
    +852 2115-3639
  • Switzerland
    Zurich, CHE
    +41 43 816 28 16
  • Germany
    Munich, Germany
    +49 89 255 47 545
  • Numismatic Guaranty Corporation
  • Paper Money Guaranty
  • Comics Guaranty, LLC
  • CCS Paper
  • Collectors' Society
  • Certified Collectibles Group
  • Official Conservation Service of


    © 2016 Numismatic Conservation Services, LLC | Legal | Privacy Policy | Terms, Conditions and Descriptions | 866-NCS-COIN