I have sone of those, 20 Francs, mostly 1/10 oz world cons for my early days of stacking. '
My first gold coin is the 1 oz First Year Issue American Buffalo Proof.
Now I stack 1/4 oz gold or similar size to that. This 2022, I think I shall continue with stacking that plus 1,1o oz gold world coins.'
In value, the core of my stack is gold! Why, it is because they are a better store of wealth.