As fine gold coins and bars are extremely soft, they can very easily be damaged. Product’s value is decreased when gold is scratched, bent or the original package has been opened.
Here are some suggestions on how to properly handle gold coins to avoid damage and loss of value.
Fingerprints cannot be removed from the mirror surface. Be aware that even the finest cloth makes small tiny scratches on the surface of a coin.
When removing coins from a holder is necessary, place them on a clean, soft surface. A velvet pad is an ideal surface. A clean soft cloth or clean piece of blank paper may be sufficient for harder coins (coins with gold proof 900-917).
PS! The above applies mainly to new gold coins and bars. Many historical gold coins have been in circulation and are therefore scratched and nicked. Gold market value has preserved in spite of that.