We think people will want gold melted down and tested or alloyed for karat.
If you mean gold coins, hardly anyone is familiar with them. How do you make change?
If you mean silver, how do you prove the silver content? Fine? Sterling? Coin? Mexican? I have seen scam jewelers who do a nitric test in front of the customer and then tell them that the result indicates sterling, when it indicates nickle. The customer is bamboozled. How many Americans know the difference between a real silver US coin and recent ones with less to no silver?
I wonder if we will all posses gold testing kits and scales with dwt weights? If you go to a jeweler’s studio, he will have both and the stamps for all gold karats and silver content.
I look at my Walking Liberty $5 gold pieces, for example, as 10th of an oz, or, at today’s prices $100. Yet, they are stamped $5.
My scenario presupposes local currencies independent of the US government money of recent vintage. But, anything can be counterfeited, that is always a risk. So, maybe there is opportunity in selling test kits and scales and perhaps holding workshops to teach folks how to use them and how to interpret the tests.
Or maybe the entire gold/silver/platinum idea is a non-starter. Probably better to trade ammo.