Conservation Showcase: South Korea 1981 20,000 Won

Posted on 8/2/2011

A recent example from our conservation laboratory.

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

Modern commemorative coins can frequently be found with hazing residues that can be both unattractive and distracting. Proof quality coins can be frequently seen with the effects of poor storage and handling but mint state strike coins can also develop the dreaded haze. Just as with proof strike coins, the mint state strike versions can be adversely affected by the presence of heavy residues.

This silver 1981 South Korean 20,000 Won commemorative coin honoring the anniversary of the 5th Republic developed a detrimental haze that was both unattractive and would hold back the grade of this piece. The haze was able to be removed safely and the coin was able to grade with NGC very well with standard numeric grading. As would any modern coin dated 1970 to date and valued less than $3000, this coin qualifies for the modern special conservation rate of $22.50 per coin for both conservation and grading.

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