Perfect Felix.
As the economy started to get out of control in Germany during the Weimar Republic, folks bought tangible items to secure their wealth, e.g. Pianos, painting's, diamonds, refrigerators, clothing, etc.
I like precious metals but, you can not eat PM's. Should you have some as part of your preps - Sure; However, do not obsess over buying PM's instead focus on tangible consumables. Tractor, rakes, shovels, freeze dryer, mason jars & extra seals, ham radio, chain saw, cow, horse, etc, etc, etc.
Remember, the seller of an item sets the value of PM's. If you need something bad enough, you will pay what the seller demands.