Silver is too volatile in price. Selling silver involves exact market timing.
Then again, gold coin values are being diluted with gold-plated tungsten.
This counterfeiting has been known for several years--even reputable dealers are being duped.
"Gold" coins must be carefully measured, as the counterfeit's weight is imperceptibly close to gold. Even governments are fighting over their gold's purity:
https://www.msn.com/en-au/money/mark...up/ar-AA18gTC4
A few years ago I bought counterfeit Chinese "silver dollars". The Chinese mint did make genuine silver coins about the size of a U.S. silver dollar but featured a dragon on the front. Those I'd bought were advertised as silver-plated novelties! (All were strongly magnetic). At about 25¢ apiece, they made for great curios.
Being smaller, interesting, and attractive on their face, these counterfeits were happily exchanged for larger items at yard sales.