The average American probably owns a pound or more of gold jewelry. It will be offered at once, en masse, by the public at large for the first bowl of rice in a famine, if Dollars are somehow no longer valid.
Those pounds and pounds of gold jewelry will put gold very low on the list of "rare" commodities that people with valuables (e.g. food, water, guns, ammo, shelter, transportation, fuel, and clothing) will be interested in weighing themselves down with or trading for.
People such as yourself will be begging those of us with food, water, guns, ammo, and transportion to trade some of what we have for the worthless yellow metal that you have hoarded.
Don't count on finding many takers.