Money needs to be stable. In order to be stable, it needs to meet these 7 characteristics.
(1) It must be durable, which is why we don’t use wheat or corn, or rice.
(2) It must be divisible, which is why we don’t use art work.
(3) It must be convenient, which is why we don’t use lead or copper.
(4) It must be consistent, which is why we don’t use real estate.
(5) It must possess value in itself, which is why we don’t use paper.
(6) It must be limited in the quantity that is available, which is why we don’t use aluminum or iron.
(7) It should have a long history of acceptance, which is why we don’t use molybdenum or rhodium.
Only GOLD and SILVER fit all seven characteristics.
EVERYTHING else is inferior which makes them credit. They are essentially Gold substitutes.
If you had a race to see who was the fastest man in the world there can only be one winner and ONLY ONE person can hold the label of the fastest man in the world. It doesn't mean that the rest are slow it just means that they are not the fastest.
Value is ultimately determined by the person holding the money. "He who has the Gold makes the rules."
This will matter when trust in the USD and other fiat currencies is lost. The monetary system will "reset" back to Gold and Silver. [sound money]
The real question is what the big brains will set the price of gold and silver at in relation to goods like gas, milk, cars, and houses.
You hold the true currency, so you have a large say in the cost. Haggling would be a thing since you hold what they want ultimately. Unless a newcurrency backed by gold comes out- then it would be tied to that mostly.