I see we have a couple of new kids here today. So let's focus on what is real.
If you don't have to move it, protect it, or hide it from prying eyes, storing up a large amount of useful tangible goods is the real objective. Tangible goods like food, water, protection from harm, a self sufficient farm, and a secure shelter. The objective is to store some, plus have the means to keep replacing these tangible goods.
But here comes the problem.
You may have to move it, protect it, and hide it from prying eyes. In fact, I guarantee that they folks with food, well water, cropland, fruit trees, solar panels, and diesel fuel will have to move, hide, or protect this stuff.
How? How do you keep the deed to your farm? How do you pay property taxes? How do you hold enough of your neighbors together, in order to protect your tangible stuff from those that got nothing?
Under every plausible scenario I can think of, having a dozen gold coins and a bag of junk silver, allows you to protect the tangible goods we all know we will need. They will maintain value as long as there's some local or country government around to offer the security of a county sheriff.
And as long as you buy them secretly, cache them, and keep your big mouth shut, there is no real chance that some grifter or the government is going to take them away.
Ps, yes I bought the weapons, food storage, and the 64 ac ranch first.