I count on industrial demand for silver and not on disaster scenarios.
The world did not fall apart for useless bitcoin to grow 10.000% and it won't fall apart because of silver.
I don't care if my ordinary bullion maples have milk spots. They are just bullion and I will buy some 2014 maples (security features).
I used to buy privy mark maple leafs, wildlife series.. they developed spots even if left in original foil or never opened tubes. That pissed me off and I got...
Privy marks? I never touch the stuff and never will. They can keep them all.
Perth should mint its own version of maple leaf/american eagle/philharmonic in tubes and leave it at that.
I don't think that you'll be able to melt and reuse graphene like you can do with silver. So no graphene coins.
I have absolutely no worries about graphene replacing silver. Maybe in few select areas but not in all 1000s of silver uses.