If you're going to keep some money in cash, is there any downside to keeping it in gold coins that you can buy at their face value, where that face value is higher than the metal value?
I came across this €1000 coin, which can actually be bought for €1000. It contains 17 grams of gold, worth about €600 today. Is there any downside to this over keeping €1000 in regular banknotes? (Other than the practical challenges of getting a bank to accept it, I guess.)
The potential upside is, of course, that the metal may eventually be worth more than the face value. (Of course, if you're keeping many of these for a long time there would be some storage costs, like with any physical metal.)